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what is attribute is attribute inheritance in dbms?
deffine class&object
Database systems have many opposite efforts ?
anyone have a textbook solutions case fair, 8 edition of vol 1 ?, please give me
Surgeons identified by doctor ID (DOCID) operate on patients identified by patient ID (PATID) in operating theaters identified by room numbers (ROOMNO). Each surgeon can operate on
The database files accept the actual data and are typically the biggest in size. Depending on their shape, the tables for all the user operation can go in one database file-but
Multi-list file Organisation Multi-list file organisation is a multi-index linked file organisation. A linked file organisation is a logical organisation where physical orderin
what is object-identity
What is Relational calculus? Relational calculus is a Non- Procedural language.
Timestamps For Read operations: If TS (T) If TS (T) >= W-timestamp (Q), then the transaction T is trying to read a value of data item Q which has been written and committed
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