TPFDD
TPFDD
TPFDD
TPFDD
define plan of operation
A database schema is an actual plan for a database system. Sub-schemas are separate divisions that are used to achieve the plan for the database system.
Operation Sealion.
Subschema
Operation Plan (OPLAN)
operation plan
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as the data is organised into a database, retrieving data, adding new data and all other operations on the database are quicker & hence efficient