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What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
What is the way a particular application views the data from the database that the application uses? Sub schema is the way a particular application views the data from the data
How to Insert data in your table from another table? insert into e.g, To insert tuples from employee into N_emp created above, use following statement Insert into N_emp
Define object-relational systems? Systems that give object-oriented extensions to relational systems are known as object-relational systems.
Equi Join: A join in which the joining condition is based on equality among values in the common columns. Common columns show (redundantly) in the result table. Let us Consider th
List some instances of collection types? a) sets b) arrays c) multisets
Advantages And Drawbacks Of Ddbms There are various reasons for building distributed database systems, with sharing of data, reliability and availability, and speedup of query
define locking in simple language and decribed it
Differentiate strict two phase locking protocol and rigorous two phase locking protocol. In strict two phase locking protocol all exclusive mode locks taken by a transaction is
usecase diagram,activity diagraM,SEQUENCE DIAGRAM
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