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Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
How do I use strap on?#
why are older data base model are being replaced by new data model
How to reduce data redundency
Consider the following relations: S (S#, SNAME, STATUS, CITY) SP (S#, P#, QTY) P (P#, PNAME, COLOR, WEIGHT, CITY) Give an expression within SQL for each of queries b
List the drawbacks of relational database system A) Repetition of data B) Inability to s certain information.
What are the two types of indices? The two types of indices are:- A) Dense index B) Sparse index
Describe Dynamic Model. The dynamic model specifies allowable sequences of changes to the objects from an object model. It contains event trace diagrams describing scenarios. A
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
What is called a query evaluation plan? A sequence of primitive operations that can be used to assess a query is a query evaluation plan or a query implementation plan.
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