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What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
What are the storage types? The storage types are: a) Volatile storage b) Nonvolatile storage
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 are the states of transaction? The states of transaction are:- a) Active b) Partially committed c) Failed d) Aborted e )Committed f) Terminated
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
What is Trigger? A trigger is a SQL procedure that initiates an action when an event (INSERT, DELETE or UPDATE) occurs. Triggers are kept in and managed by the DBMS. Triggers a
What is relational model feature? A relational model feature is much more data independence than some other database models.
Consider the following six relation schemes and their corresponding sets of functional dependencies. In each case identify a. All the candidate keys b. The highest normal for
What is the meaning of Recovery? In deferred update methods, if a transaction fails before arriving its commit point, it will not have altered the database in any way, so UNDO
Let us now talk about the relational operations: SELECT The select operation is used to select few specific record from the database based on different criteria, This is a un
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