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Attributes attached to an entity can be of various types.
Simple
The attribute that cannot be further separated into smaller parts and shows the basic meaning is known as a simple attribute. For instance: The 'First name', 'Last name', age attributes of a person entity signifies a simple attribute.
Composite
Attributes that can be further separated into smaller units and every individual unit have a specific meaning.
For instance:-The NAME attribute of an employee entity can be sub-divided into
First name, Last name and Middle name.
Define Query Processing Query processing is the process of selecting the best plan or strategy to be employed in responding to a database request. The plan is then executed to
Which component is not included in database environment ? A users component is not included in database environment.
OBJECTIVES After going through this unit you should be capable to: Explain the File Based system and its limitations; Explain the structure of DBMS; Explain the
Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.
Explain the main advantages of DBMS over File Oriented System ?
Operator Precedence The basic operators used in SQL are * / - + Operators of the similar priority are evaluated From Left to right Parentheses are used to force priorit
Database Administrator One of the main perpose for having the database management system is to have control of both data or programs accessing that data. The person having li
Normal 0 false false false EN-IN X-NONE X-NONE
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
Increased parallelism : Since the replicated date has several copies a query can be distributed or can be answered from the smallest loaded site. Also, with more replicas you have
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