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Data Manipulation Language
Data manipulation language (DML) describes a set of commands that are used to query and change data within existing schema objects. In this case commit is not implicit that is alters are not permanent till explicitly committed. DML statements having of SELECT, UPDATE, INSERT and DELETE statements.
Explain the Fundamental concepts of object-orientation Software developers, data base administrators (DBAs) need to be familiar with fundamental concepts of object-orientation.
A set of possible data values is called? A set of possible data values is called as domain.
What is transaction? Transaction is a unit of program implementation that accesses and possibly updated several data items.
Write a short note on built in function in QBE? Built in function in QBE: QBE involves various built in functions like AVG, MAX,MIN,SUM and CNT. We must prefix these operator
why three level architecture had been developed/
Explain sorted File with advantages? Sorted file The sort utility shall perform one of the subsequent functions: 1.Sort lines of all the named files together and write the
Why does a DBMS query language is designed? A DBMS query language is designed to support end users who use English-like commands. support in the development of complex applicat
Define the Traditional System Analysis and Design Traditional System Analysis and Design (SAD) have three basic life cycle models. A typical software lifecycle consists of the
Build a database application for a sports league. Assume your application is to keep track of teams and equipment that is checked out to teams. Explain the steps that is needed and
One-way Associations If an association is only traversed in single direction, then it is known as one-way association. It is implemented as a pointer or an attribute which con
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