Slide 4 of 21
Notes:
- 1. Allows inclusion of a query optimizer and run-time
system
- Navigational Interface (V.1 only)
- Provides each record with a unique identifier OID, can
use OID of one record as data item in a record.
- Can intersperse programming language, POSTQUEL, and
direct calls to internal POSTGRES interfaces(fast path).
- 2. PROS: persistence of variables, integrated query
language with the control statements of the language.
- CONS: map disks, include pointers, etc. in main memory-
increase system footprint
