ISAM - definizione. Che cos'è ISAM
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Cosa (chi) è ISAM - definizione

FILE FORMAT
Indexed Sequential Access Method; Isam; Indexed sequential access method; Basic Indexed Sequential Access Method; Queued Indexed Sequential Access Method; Queued indexed sequential access method; Basic indexed sequential access method; QISAM; BISAM; BISAM (computing); Hierarchical Indexed Sequential Access Method; Hierarchical indexed sequential access method; HISAM (computing); HISAM

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Index-Sequential Access Mode (Reference: DB, SAM)
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ISAM (an acronym for indexed sequential access method) is a method for creating, maintaining, and manipulating computer files of data so that records can be retrieved sequentially or randomly by one or more keys. Indexes of key fields are maintained to achieve fast retrieval of required file records in Indexed files.

Wikipedia

ISAM

ISAM (an acronym for indexed sequential access method) is a method for creating, maintaining, and manipulating computer files of data so that records can be retrieved sequentially or randomly by one or more keys. Indexes of key fields are maintained to achieve fast retrieval of required file records in Indexed files. IBM originally developed ISAM for mainframe computers, but implementations are available for most computer systems.

The term ISAM is used for several related concepts:

  • The IBM ISAM product and the algorithm it employs.
  • A database system where an application developer directly uses an application programming interface to search indexes in order to locate records in data files. In contrast, a relational database uses a query optimizer which automatically selects indexes.
  • An indexing algorithm that allows both sequential and keyed access to data. Most databases use some variation of the B-tree for this purpose, although the original IBM ISAM and VSAM implementations did not do so.
  • Most generally, any index for a database. Indexes are used by almost all databases.
Esempi dal corpus di testo per ISAM
1. Advertisement The editor–in–chief of the daily Tishrin, Isam Dari, reflected this frustration.
2. The paper‘s editor, Isam Dari, accused the Arab states of responding insufficiently to the alleged Israeli operation in Syria.
3. A spokesman for the Muslim association, Isam Rawi, told al–Arabiya television that the proposed edict erred in setting quotas and failing to treat all Iraqis equally.
4. The SLM Haskanita spokesperson Isam Eddine al–Haj said in the press statement, Sudanese army aviation from Antonove aeroplane and helicopters participated in the attack.
5. A relative of the women, Mohammed Isam, was severely injured in the bombing, explained Oday Abdul, 25, a neighbor and family friend who was standing outside.