About DBMS

1. Harish M H
B.A., B.Ed., MLISc
harishmh88@gmail.com

2. Presented by:
Harish M H
Guided by:
Dr. Rajendra Babu H
Assistant Professor
Dept. of studies and research
in LIS Tumkur University, Tumkur

3.  Systematically organized or structured
repository of indexed information (usually as a
group of linked data files) that allows easy
retrieval, updating, analysis, and output of
data. Stored usually in a computer, this data
could be in the form of graphics, reports,
scripts, tables, text, etc., representing almost
every kind of information. Most computer
applications (including antivirus, software,
spreadsheets, word-processors) are database at
their core.

4.  A DBMS is a collection of programs which
provide management of database control
access to data contain a query language to
retrieval information easily.
 In the below picture there are the main phases
of data phase design database design in
connected with application design.

5.  The requirement and the collection analysis phase
produce both data requirements and functional
requirements. The data requirements are used as a
source of data base design. The data requirements
should be specified in has detail incomplete form as
possible.
 In parallel with specifying the data requirements it is
useful to specify the functional requirements of the
application. These consist of user-defined operations
that will be applied to the database. Thee functional
requirements are used as a source of application
software design as below:

7.  Determine the purpose of the database:
This helps prepare for the remaining steps.
 Find the organize the information required:
Gather all of the types of information to record in the
database, such as product name and order number.
 Divide the information into tables:
Divide information items into major entities or subjects.
Such as products or orders. Each subject them become
a table.
 Turn information items into columns:
Decide what information need to be stored in each table.
Each item becomes a field and is displayed as a column
in the table.

8.  Specific primary key:
Choose each tables primary key. The primary key is a column
or a set of columns, that is used to uniquely identify each
row.
 Set up the table relationship:
Look at each table and decide how the data in one table is
related to the data in other tables, add fields to tables or
create new tables to clarity the relationships as necessary.
 Refine the design:
Analyze the design for errors. Create tables and add a few
records of sample data. Check if results come from the
tables as expected make adjusts to the design as needed.
 Apply the normalization rules:
Apply the data normalization rules to see if tables are
structured correctly make adjustments to the tables.

10.  A database management system (DBMS) is a
computer application program
designed for the efficient and effective storage,
access and update of large volumes of
information. This course will look at such
systems from two perspectives.
 A system implementation perspective focusing
on the policies, algorithms and data structures
used to design and implement a DBMS.