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z
ORGANIZACIÓN
SECUENCIAL
INDEXADA
z
Se caracteriza por el acceso a un
determinado bloque donde hay un conjunto
de registros y a partir de ahí busca
determinado registro en forma secuencial
z
ORGANIZACIÓN
SECUENCIAL INDEXADA
Area de
índices
Almacena las claves
del área primaria
Pista 0
Area
primaria
Almacena los
registros
Pista 1
Ara del
overflow
Almacena registro
que se desbordan del
área principal
Pista n
z
ÁREA PRIMARIA AREA DE INDICES
punt
ero
clave nombre
1 11 L
2 18 J
3 22 R
4 23 S
5 28 K
6 31 P
Clave registro direccion
11 1
18 1
22 1
23 4
28 4
31 4
AREA DEL OVERFLOW:
23 M
35 K
Al no haber espacio en la pista del bloque
que corresponde el dato, este se desborda
por ende se almacenara en una nueva
pista pero en distinto bloque

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ORGANIZACIÓN SECUENCIAL INDEXADA.pptx

  • 2. z Se caracteriza por el acceso a un determinado bloque donde hay un conjunto de registros y a partir de ahí busca determinado registro en forma secuencial
  • 3. z ORGANIZACIÓN SECUENCIAL INDEXADA Area de índices Almacena las claves del área primaria Pista 0 Area primaria Almacena los registros Pista 1 Ara del overflow Almacena registro que se desbordan del área principal Pista n
  • 4. z ÁREA PRIMARIA AREA DE INDICES punt ero clave nombre 1 11 L 2 18 J 3 22 R 4 23 S 5 28 K 6 31 P Clave registro direccion 11 1 18 1 22 1 23 4 28 4 31 4 AREA DEL OVERFLOW: 23 M 35 K Al no haber espacio en la pista del bloque que corresponde el dato, este se desborda por ende se almacenara en una nueva pista pero en distinto bloque