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Intro To IDMS
1. 09/06/16 M Sliming 1
Intro to IDMSIntro to IDMS
Margaret SlimingMargaret Sliming
OfOf
DivaProgrammer, LLCDivaProgrammer, LLC
www.web2IDMS.comwww.web2IDMS.com
2. 09/06/16 2M Sliming
IntroductionIntroduction
This presentation will cover the basicThis presentation will cover the basic
concepts of IDMS database structure, dataconcepts of IDMS database structure, data
relationships and access methods.relationships and access methods.
3. 09/06/16 3M Sliming
AgendaAgenda
Data RelationshipsData Relationships
Database ArchitectureDatabase Architecture
Database DefinitionDatabase Definition
CurrencyCurrency
COBOL CommandsCOBOL Commands
Error HandlingError Handling
Central VersionCentral Version
CulpritCulprit
SQLSQL
Additional Information / SourcesAdditional Information / Sources
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Data RelationshipsData Relationships
TABLE RELATIONSHIPS
PAYROLL
ID
TCHR SSN
SALARY
TEACHER
ID
NAME
SSN
DEPT ID
DEPARTMENT
ID
NAME
STUD-CRSE
STUD ID
CRSE ID
COURSE
ID
NAME
TCHR ID
STUDENT
ID
NAME
ADDR
One-to-One
One-to-Many
Many-to-Many
5. 09/06/16 5M Sliming
Data Relationships (Con’t)Data Relationships (Con’t)
Data relates in three ways:Data relates in three ways:
One-to-One (eg. Payroll & Teacher)One-to-One (eg. Payroll & Teacher)
One-to-Many (eg. Teacher & Course)One-to-Many (eg. Teacher & Course)
Many-to-Many (eg. Course & Student)Many-to-Many (eg. Course & Student)
Relational databases use foreign keys to relateRelational databases use foreign keys to relate
records and IDMS uses sets.records and IDMS uses sets.
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Database ArchitectureDatabase Architecture
The preceding page illustrates how records areThe preceding page illustrates how records are
stored in IDMS.stored in IDMS.
The database is comprised of areas which areThe database is comprised of areas which are
mapped to disk files. Areas are broken up intomapped to disk files. Areas are broken up into
pages which contain the database records. Thepages which contain the database records. The
records are uniquely identified by the pagerecords are uniquely identified by the page
number, they reside on, and a sequence number,number, they reside on, and a sequence number,
called a line number. This makes up what iscalled a line number. This makes up what is
known as the database key or DB-KEY.known as the database key or DB-KEY.
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Database DefinitionDatabase Definition
A Schema contains the record, set and areaA Schema contains the record, set and area
definitions for an IDMS database.definitions for an IDMS database.
A Subschema contains the records, sets andA Subschema contains the records, sets and
areas that can be referenced by an applicationareas that can be referenced by an application
and whether they can be updated or retrievedand whether they can be updated or retrieved
only.only.
A DMCL maps the database areas to fileA DMCL maps the database areas to file
blocks.blocks.
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Database DefinitionDatabase Definition
To program IDMS applications, our mostTo program IDMS applications, our most
valuable tool is the schema definition and/orvaluable tool is the schema definition and/or
diagram, seen on slide 10, known as thediagram, seen on slide 10, known as the
“Bachman” diagram.“Bachman” diagram.
In order to retrieve and/or update informationIn order to retrieve and/or update information
in the database, we have to know how to get toin the database, we have to know how to get to
it.it.
The following pages will detail how we defineThe following pages will detail how we define
data relationships in IDMS.data relationships in IDMS.
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Database DefinitionDatabase Definition
Record AttributesRecord Attributes
Location ModesLocation Modes
Set AttributesSet Attributes
Indexed SetsIndexed Sets
Area SweepsArea Sweeps
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Database Definition - Record AttributesDatabase Definition - Record Attributes
Record ID:Record ID: Unique numeric value within theUnique numeric value within the
schema assigned to the record. It’s helpful toschema assigned to the record. It’s helpful to
include this number in the record name and to alsoinclude this number in the record name and to also
prefix each record element with it.prefix each record element with it.
Storage Mode:Storage Mode: This means storing the record asThis means storing the record as
fixed or variable. Fixed is the most desirable so thefixed or variable. Fixed is the most desirable so the
record does not change size when it gets updated.record does not change size when it gets updated.
Variable records can get fragmented and thus takeVariable records can get fragmented and thus take
more I/O to retrieve.more I/O to retrieve.
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Database Definition - Record AttributesDatabase Definition - Record Attributes
Record Length:Record Length: This value includes the total length ofThis value includes the total length of
all data elements plus four bytes for each pointerall data elements plus four bytes for each pointer
database key associated with the record. Pointers willdatabase key associated with the record. Pointers will
be discussed later with set options.be discussed later with set options.
Location ModeLocation Mode,, Set NameSet Name andand DuplicatesDuplicates
IndicatorIndicator will we discussed in more detail later in thiswill we discussed in more detail later in this
section.section.
Area Name:Area Name: Name of the database area the record isName of the database area the record is
stored in.stored in.
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Database Definitiion - Location ModesDatabase Definitiion - Location Modes
The manner in which a record occurrence is physicallyThe manner in which a record occurrence is physically
located in an area of the database. The three types are:located in an area of the database. The three types are:
CALC, VIA and DIRECT.CALC, VIA and DIRECT.
CALC: A method of determining the target page forCALC: A method of determining the target page for
storage of a record in the database. The target page isstorage of a record in the database. The target page is
calculated is calculated by means of a randomizingcalculated is calculated by means of a randomizing
routine executed against the value of the Calc key in theroutine executed against the value of the Calc key in the
record.record.
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Database Definition - Location ModesDatabase Definition - Location Modes
VIA: Clusters member records in the same physicalVIA: Clusters member records in the same physical
location for efficient database access. Optionally, Vialocation for efficient database access. Optionally, Via
can cluster member records with their owners.can cluster member records with their owners.
DIRECT: Populates an area in the order the recordsDIRECT: Populates an area in the order the records
are loaded. This mode is best used for data which isare loaded. This mode is best used for data which is
static and will be retrieved in the order it physicallystatic and will be retrieved in the order it physically
resides in the database.resides in the database.
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Database Definition – Location ModesDatabase Definition – Location Modes
This example illustrates how records are stored VIA when the owner
and member reside in different areas.
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Database Definition - Set AttributesDatabase Definition - Set Attributes
Sets relate records to each other in IDMS using aSets relate records to each other in IDMS using a
number of parameters.number of parameters.
PointersPointers: Next, Prior, Owner, Index, Index Owner: Next, Prior, Owner, Index, Index Owner
MembershipMembership: Mandatory Automatic, Mandatory: Mandatory Automatic, Mandatory
Manual, Optional Automatic, Optional ManualManual, Optional Automatic, Optional Manual
OrderOrder (Unsorted sets): First, Last, Next, Prior(Unsorted sets): First, Last, Next, Prior
(Sorted sets): Ascending or(Sorted sets): Ascending or
descending by keydescending by key
A database record contains a pointer (aka Db-key)A database record contains a pointer (aka Db-key)
for each record it relates to. ie. If it is stored Next,for each record it relates to. ie. If it is stored Next,
Prior and Owner in a set, it will contain the pointerPrior and Owner in a set, it will contain the pointer
for the owner, previous and next record in the set.for the owner, previous and next record in the set.
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Database Definition – Area SweepsDatabase Definition – Area Sweeps
This method of retrieval is used when records cannotThis method of retrieval is used when records cannot
be retrieved using key information. The entire area isbe retrieved using key information. The entire area is
read from beginning to end and the program selects theread from beginning to end and the program selects the
desired records.desired records.
This can be a good method when all occurrences of aThis can be a good method when all occurrences of a
record type are needed and there are not too manyrecord type are needed and there are not too many
different record types in the area.different record types in the area.
The programmer must pay close attention to currencyThe programmer must pay close attention to currency
when retrieving owner records with an area sweep andwhen retrieving owner records with an area sweep and
then getting their member records when both recordsthen getting their member records when both records
reside in the same area. Looping can occur if thereside in the same area. Looping can occur if the
owner record is not made current of area before eachowner record is not made current of area before each
obtain.obtain.
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CurrencyCurrency
IDMS keeps track of record occurrences,IDMS keeps track of record occurrences,
being processed, by area, set, record type andbeing processed, by area, set, record type and
run-unit (program).run-unit (program).
The current record is usually the lastThe current record is usually the last
record retrieved or updated.record retrieved or updated.
Currency is extremely important toCurrency is extremely important to
understand, especially when updating aunderstand, especially when updating a
database, for maintaining data integrity.database, for maintaining data integrity.
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COBOL Commands -COBOL Commands - ACCEPTACCEPT
Retrieves information pertaining to the status of theRetrieves information pertaining to the status of the
database.database.
Format:Format:
ACCEPT {TASK CODE } INTOACCEPT {TASK CODE } INTO return-locationreturn-location..
{TASK ID }{TASK ID }
{LTERM ID }{LTERM ID }
{PTERM ID }{PTERM ID }
{SYSVERSION}{SYSVERSION}
{USER ID }{USER ID }
{SCREENSIZE}{SCREENSIZE}
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COBOL commands -COBOL commands - BINDBIND
Initiates a run-unit and establishes addressabilityInitiates a run-unit and establishes addressability
in variable storage to the IDMS communicationin variable storage to the IDMS communication
block, record types and optionally to procedureblock, record types and optionally to procedure
control information.control information.
Format:Format:
BIND {RUN-UNIT } .BIND {RUN-UNIT } .
{record-name }{record-name }
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COBOL Commands -COBOL Commands - COMMITCOMMIT
Makes database updates permanent. Ie. If aMakes database updates permanent. Ie. If a
program abends without having issued anyprogram abends without having issued any
‘COMMIT’s, all updates issued by the program‘COMMIT’s, all updates issued by the program
will be rolled back.will be rolled back.
Format:Format:
COMMIT { } .COMMIT { } .
{ALL}{ALL}
33. 09/06/16 33M Sliming
COBOL Commands -COBOL Commands - CONNECTCONNECT
Establishes a record occurrence as a member ofEstablishes a record occurrence as a member of
a set occurrence. The set must not be defined asa set occurrence. The set must not be defined as
Mandatory Automatic.Mandatory Automatic.
Format:Format:
CONNECTCONNECT record-namerecord-name TOTO set-nameset-name ..
34. 09/06/16 34M Sliming
COBOL Commands -COBOL Commands - DISCONNECTDISCONNECT
Removes a member record occurrence from aRemoves a member record occurrence from a
set but does not delete the record from theset but does not delete the record from the
database. This command is only valid fordatabase. This command is only valid for
records which are optional members of a set.records which are optional members of a set.
Format:Format:
DISCONNECTDISCONNECT record-namerecord-name FROMFROM set-nameset-name ..
35. 09/06/16 35M Sliming
COBOL Commands -COBOL Commands - ERASEERASE
Deletes a record occurrence from the databaseDeletes a record occurrence from the database
and optionally deletes records subordinate to it.and optionally deletes records subordinate to it.
Format:Format:
ERASE record-name { } .ERASE record-name { } .
{ALL MEMBERS}{ALL MEMBERS}
36. 09/06/16 36M Sliming
COBOL Commands -COBOL Commands - FIND / OBTAINFIND / OBTAIN
The FIND statement locates a recordThe FIND statement locates a record
occurrence in the database; the OBTAINoccurrence in the database; the OBTAIN
statement locates a record and moves the datastatement locates a record and moves the data
associated with the record to the record buffers.associated with the record to the record buffers.
Because the FIND and OBTAIN commandBecause the FIND and OBTAIN command
statements have identical formats, they arestatements have identical formats, they are
discussed together. The six formats of thediscussed together. The six formats of the
FIND/OBTAIN statement are as follows:FIND/OBTAIN statement are as follows:
37. 09/06/16 37M Sliming
COBOL Commands -COBOL Commands - FIND / OBTAINFIND / OBTAIN
FIND/OBTAIN CALCFIND/OBTAIN CALC accesses a record occurrence by usingaccesses a record occurrence by using
its CALC key value.its CALC key value.
FIND/OBTAIN CURRENTFIND/OBTAIN CURRENT accesses a record occurrence byaccesses a record occurrence by
using established currencies.using established currencies.
FIND/OBTAIN DB-KEYFIND/OBTAIN DB-KEY accesses a record occurrence byaccesses a record occurrence by
using its database key.using its database key.
FIND/OBTAIN OWNERFIND/OBTAIN OWNER accesses the owner record of a setaccesses the owner record of a set
occurrence.occurrence.
FIND/OBTAIN WITHIN SET USING SORT KEYFIND/OBTAIN WITHIN SET USING SORT KEY
accesses a record occurrence in a sorted set by using its sort keyaccesses a record occurrence in a sorted set by using its sort key
value.value.
FIND/OBTAIN WITHIN SET/AREAFIND/OBTAIN WITHIN SET/AREA accesses a recordaccesses a record
occurrence based on its logical location within a set or on itsoccurrence based on its logical location within a set or on its
physical location within an area.physical location within an area.
40. 09/06/16 40M Sliming
COBOL Commands -COBOL Commands - IFIF
The IF statement allows the program to test for theThe IF statement allows the program to test for the
presence of member record occurrences in a set and topresence of member record occurrences in a set and to
determine the membership status of a recorddetermine the membership status of a record
occurrence in a specified set; once the set has beenoccurrence in a specified set; once the set has been
evaluated, the IF statement specifies further actionevaluated, the IF statement specifies further action
based on the outcome of the evaluation. For example,based on the outcome of the evaluation. For example,
an IF statement might be used to determine whether aan IF statement might be used to determine whether a
set occurrence is empty and, if it is empty, to erase theset occurrence is empty and, if it is empty, to erase the
owner record.owner record.
Note: DML IF statements cannot be nested within
COBOL IF statements.
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COBOL Commands -COBOL Commands - IFIF
Depending on its format, the IF statement uses set or run-unit
currency. The object set occurrence of an IF statement is
determined by the owner of the current record of the named set;
the object record occurrence is determined by the current of run
unit.
Each IF statement contains a conditional phrase and an
imperative statement. When an IF is issued, the
precompiler first generates a call to the DBMS to
execute the conditional phrase; the results of the test
determine whether or not the imperative statement is
executed.
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COBOL Commands -COBOL Commands - ModifyModify
Replaces the contents of a database record occurrenceReplaces the contents of a database record occurrence
with the values in it’s corresponding variable storage.with the values in it’s corresponding variable storage.
Note: The database record being modified, mustNote: The database record being modified, must
always be current of run-unit.always be current of run-unit.
Format:Format:
MODIFYMODIFY record-namerecord-name ..
44. 09/06/16 44M Sliming
COBOL Commands -COBOL Commands - READYREADY
Prepares a database area for access by DML functions
and specifies that area's usage mode.
Format:
READY { } USAGE-MODE {UPDATE } .READY { } USAGE-MODE {UPDATE } .
{{ area-namearea-name } {RETRIEVAL}} {RETRIEVAL}
45. 09/06/16 45M Sliming
COBOL Commands -COBOL Commands - ROLLBACKROLLBACK
Rolls back uncommitted changes made to the databaseRolls back uncommitted changes made to the database
through an individual run unit.through an individual run unit.
Format:Format:
ROLLBACK { CONTINUE } .ROLLBACK { CONTINUE } .
The CONTINUE option allows the run-unit to remainThe CONTINUE option allows the run-unit to remain
active after the changes have been backed out.active after the changes have been backed out.
Database access can be resumed without issuing BINDDatabase access can be resumed without issuing BIND
and READY statements.and READY statements.
46. 09/06/16 46M Sliming
ERROR HANDLINGERROR HANDLING
After each IDMS command executes, a value isAfter each IDMS command executes, a value is
returned into a field called ERROR-STATUS which isreturned into a field called ERROR-STATUS which is
‘0000’ if the command was successful, or a 4-byte value‘0000’ if the command was successful, or a 4-byte value
indicating the command in error and the reason for theindicating the command in error and the reason for the
error. The first two bytes of ERROR-STATUSerror. The first two bytes of ERROR-STATUS
indicate the command and the last two bytes indicateindicate the command and the last two bytes indicate
the cause of the error.the cause of the error.
Every IDMS error should be trapped and theEvery IDMS error should be trapped and the
appropriate action should be taken. This action may beappropriate action should be taken. This action may be
an error message or an Abort of the programan error message or an Abort of the program
depending on the severity of the error.depending on the severity of the error.
A list of these error status codes can be found inA list of these error status codes can be found in
Volume 4, Chapter 11 of the ‘IDMS Messages andVolume 4, Chapter 11 of the ‘IDMS Messages and
Codes’ manuals.Codes’ manuals.
48. 09/06/16 48M Sliming
Central Version / Local ModeCentral Version / Local Mode
CENTRAL VERSIONCENTRAL VERSION is an IDMS system that enablesis an IDMS system that enables
multiple applications to access the database concurrently. Amultiple applications to access the database concurrently. A
central version controls access to data at the individual recordcentral version controls access to data at the individual record
(or row) level thus providing integrity while maximizing(or row) level thus providing integrity while maximizing
concurrency. It also provides automatic recovery in the event ofconcurrency. It also provides automatic recovery in the event of
failure. All applications executing within a TP monitorfailure. All applications executing within a TP monitor
(including DC/UCF) use central version services to access(including DC/UCF) use central version services to access
IDMS data. Batch applications can access data in centralIDMS data. Batch applications can access data in central
version or local mode.version or local mode.
LOCAL MODELOCAL MODE is a mode of operation in which a batchis a mode of operation in which a batch
program uses a dedicated copy DBMS to access the database.program uses a dedicated copy DBMS to access the database.
In local mode, only one program can update the database at aIn local mode, only one program can update the database at a
time. Updates in local mode are usually rare and only donetime. Updates in local mode are usually rare and only done
when it is faster to back of the database, run the update programwhen it is faster to back of the database, run the update program
and restore in the event of an abend than running under Centraland restore in the event of an abend than running under Central
Version.Version.
50. 09/06/16 50M Sliming
CulpritCulprit
Advantage CA-Culprit is a batch utility that generates reports
from conventional and database files.
Data Input: As shown in the diagram on the following page,
Advantage CA-Culprit can extract data from several database
and conventional file structures. As many as 32 conventional
files can be read and processed in one Advantage CA-Culprit
run. Each run can generate up to 100 reports from the same
input data. Reports can be formatted as printed output, stored
tables, or written to cards, tape, or disk.
The diagram shows The Advantage CA-Culprit Data Access
and Transfer Network. Advantage CA-Culprit can extract data
from and write reports to several database and file structures.
Advantage CA-Culprit is fully integrated with other products,
such as Advantage CA-IDMS/DB, the Integrated Data
Dictionary (IDD), and CA-ICMS.
52. 09/06/16 52M Sliming
CulpritCulprit
Sample program to list Service Office Address History for a Provider:Sample program to list Service Office Address History for a Provider:
DATABASE DICTNAME=DICT05DATABASE DICTNAME=DICT05
IN DB SS=DPU001IN DB SS=DPU001
PATHAA DPR-PROVSVOFC DPR-ADDRHISTPATHAA DPR-PROVSVOFC DPR-ADDRHIST
01OUT 132 1330 D PS(3375) DD=SYS036,36 LT=S01OUT 132 1330 D PS(3375) DD=SYS036,36 LT=S
0151*010 339-BILL-PROV-ID-NBR SZ=60151*010 339-BILL-PROV-ID-NBR SZ=6
0151*020 339-SERVICE-OFC-NBR SZ=20151*020 339-SERVICE-OFC-NBR SZ=2
0151*030 364-SERVICE-OFC-ADDR-GRP SZ=790151*030 364-SERVICE-OFC-ADDR-GRP SZ=79
0151*040 364-SVCOFC-STATUS-CODE SZ=10151*040 364-SVCOFC-STATUS-CODE SZ=1
0151*050 364-SVCOFC-ADDR-EFFDATE-FULL SZ=80151*050 364-SVCOFC-ADDR-EFFDATE-FULL SZ=8
0151*060 364-SVCOFC-ADDR-ENDDATE-FULL SZ=80151*060 364-SVCOFC-ADDR-ENDDATE-FULL SZ=8
0151*070 364-SVCOFC-PROVL-DATE-TIME SZ=140151*070 364-SVCOFC-PROVL-DATE-TIME SZ=14
017 IF 339-BILL-PROV-ID-NBR = 'B20000' 010017 IF 339-BILL-PROV-ID-NBR = 'B20000' 010
017 DROP017 DROP
017010 TAKE017010 TAKE
53. 09/06/16 53M Sliming
CulpritCulprit
Output from Sample program:Output from Sample program:
B20000 52 7117 DAWN VIEW CT SUITE 5225 CITRUS HEIGHTS CA956100000C20 C 20040910 20040910 20040910140146B20000 52 7117 DAWN VIEW CT SUITE 5225 CITRUS HEIGHTS CA956100000C20 C 20040910 20040910 20040910140146
B20000 52 11432123N VIEW CT SUITE CITRUS HEIGHTS CA956100000C20 C 20040901 20040910 20040910135446B20000 52 11432123N VIEW CT SUITE CITRUS HEIGHTS CA956100000C20 C 20040901 20040910 20040910135446
B20000 52 11432123N VIEW CT CITRUS HEIGHTS CA956100000C20 C 20040901 20040910 20040910135041B20000 52 11432123N VIEW CT CITRUS HEIGHTS CA956100000C20 C 20040901 20040910 20040910135041
B20000 52 7117 DAWN VIEW CT CITRUS HEIGHTS CA956100000A20 A 20040828 20040910 20040910124434B20000 52 7117 DAWN VIEW CT CITRUS HEIGHTS CA956100000A20 A 20040828 20040910 20040910124434
B20000 56 NEW ADDRESS DIAMOND SPRINGS CA956190000A20 A 20050801 20050830 20050826105313B20000 56 NEW ADDRESS DIAMOND SPRINGS CA956190000A20 A 20050801 20050830 20050826105313
B20000 47 7505 SYLVAN VALLEY WAY CITRUS HEIGHTS CA956100000C20 C 20041001 20041005 20041005100933B20000 47 7505 SYLVAN VALLEY WAY CITRUS HEIGHTS CA956100000C20 C 20041001 20041005 20041005100933
B20000 30 7117 NEW ADDRESS CITRUS HEIGHTS CA956213501C20 C 20050829 20050829 20050829143219B20000 30 7117 NEW ADDRESS CITRUS HEIGHTS CA956213501C20 C 20050829 20050829 20050829143219
B20000 54 75 CH CA956100000A20 A 20040901 20040907 20040907150639B20000 54 75 CH CA956100000A20 A 20040901 20040907 20040907150639
B20000 55 TEST ADDRESSS TT CITY CA956100000C20 C 20030901 20040830 20041026154158B20000 55 TEST ADDRESSS TT CITY CA956100000C20 C 20030901 20040830 20041026154158
B20000 55 TEST ADDRESSS CITY CA956100000A20 A 20040901 20041026 20040923141317B20000 55 TEST ADDRESSS CITY CA956100000A20 A 20040901 20041026 20040923141317
B20000 50 785 CH CA956100000A20 A 20040701 20041005 20040830143345B20000 50 785 CH CA956100000A20 A 20040701 20041005 20040830143345
B20000 48 12123 DH CA956100000C20 C 20041002 20041005 20041005101456B20000 48 12123 DH CA956100000C20 C 20041002 20041005 20041005101456
B20000 5 7117 DAWN VIEW CT CITRUS HEIGHTS CA956284011C20 C 20060316 20060328111055B20000 5 7117 DAWN VIEW CT CITRUS HEIGHTS CA956284011C20 C 20060316 20060328111055
B20000 5 7117 DAWN VIEW CT CITRUS HEIGHTS CA956284011C20 C 20040901 20040910 20040907150441B20000 5 7117 DAWN VIEW CT CITRUS HEIGHTS CA956284011C20 C 20040901 20040910 20040907150441
B20000 5 7505 SYLVAN VALLEY WAY CITRUS HEIGHTS CA956284011C20 C 20040828 20040907 20040907132818B20000 5 7505 SYLVAN VALLEY WAY CITRUS HEIGHTS CA956284011C20 C 20040828 20040907 20040907132818
B20000 53 75 X CH CA956100000C20 C 20041001 20041005 20041005101533B20000 53 75 X CH CA956100000C20 C 20041001 20041005 20041005101533
B20000 53 75 CH CA956100000A20 A 20040401 20041005 20040901155604B20000 53 75 CH CA956100000A20 A 20040401 20041005 20040901155604
B20000 1 5555555555555ET PLACERVILLE CA956213501C20 C 20060314 20060315113330B20000 1 5555555555555ET PLACERVILLE CA956213501C20 C 20060314 20060315113330
B20000 1 555 MAIN STREET PLACERVILLE CA956213501C20 C 20060308 20060315 20060309113516B20000 1 555 MAIN STREET PLACERVILLE CA956213501C20 C 20060308 20060315 20060309113516
B20000 1 555 MAIN STREET PLACERVILLE CA956213501C20 C 20060207 20060216 20060207161221B20000 1 555 MAIN STREET PLACERVILLE CA956213501C20 C 20060207 20060216 20060207161221
B20000 1 555 MAIN STREET PLACERVILLE CA956213501C20 C 20060205 20060207 20060206131043B20000 1 555 MAIN STREET PLACERVILLE CA956213501C20 C 20060205 20060207 20060206131043
B20000 1 555 MAIN STREET PO BOX 5 PLACERVILLE CA956213501C20 C 20040830 20041207 20040901160019B20000 1 555 MAIN STREET PO BOX 5 PLACERVILLE CA956213501C20 C 20040830 20041207 20040901160019
B20000 46 DD X CC CA956100000C20 C 20041001 20041005 20041005101738B20000 46 DD X CC CA956100000C20 C 20041001 20041005 20041005101738
B20000 51 7505 SYLVAN VALLEY WAY CITRUS HEIGHTS CA956100000A20 A 20040828 20041005 20040831153728B20000 51 7505 SYLVAN VALLEY WAY CITRUS HEIGHTS CA956100000A20 A 20040828 20041005 20040831153728
55. 09/06/16 55M Sliming
SQLSQL
With the SQL feature, non-SQL defined IDMSWith the SQL feature, non-SQL defined IDMS
databases can be accessed using SQL DML (IDMSdatabases can be accessed using SQL DML (IDMS
version of SQL). This is done by either using theversion of SQL). This is done by either using the
Online Command Facility (OCF) or the batch programOnline Command Facility (OCF) or the batch program
IDMSBCF.IDMSBCF.
An SQL schema is created which maps to that of theAn SQL schema is created which maps to that of the
non-SQL IDMS database.non-SQL IDMS database.
Records defined in the non-SQL schema can then be
accessed as tables in SQL.
The following page show an example of executing aThe following page show an example of executing a
SELECT statement using OCF.SELECT statement using OCF.