Database Management
Reference Manual
Introduction to Database Concepts
:
Extracts
: Create Extracts
Create Extracts
Extracts are created from existing multiwrite DBs. The existing DB then becomes the Master DB. Many extracts may be created off the same Master DBs. Extracts may also be created from other extracts. The term extract family is used to refer to all extracts created directly or indirectly off a Master DB. Example of an extract family:
In this extract family, three extracts were created below the Master DB. Two further extracts were then created below Extract1.
There may be up to 8000 extracts in an extract family.
Extracts may be included in an MDB as for any other DB. Two extracts from the same extract family cannot be included in the same MDB.
1974 to current year.
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