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network and relational dbms, Database Management System
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Posted Date: 8/21/2012 12:58:41 PM | Location : United States
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Describe file organisation, Describe file organisation? A file is organ...
Describe file organisation? A file is organized logically as a sequence of records. These records are mapped onto disk blocks. A) Fixed-Length Records Type deposit=record
Define database management system, Normal 0 false false fal...
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Advantages to copying records from one table to another, What kind of advan...
What kind of advantages to copying records from one table to another? -) When an algorithm that modifies a table is used after that it's safer to work with the copy -) When
What is data defination language, What is DDL? Make a list of commands with...
What is DDL? Make a list of commands with short description used in DDL Ans: Data Definition Language that is abbreviated as DDL is a computer language for defining data struct
Create student db and retrieve all student name in cs, Create a Student dat...
Create a Student database and Retrieve the names of all students majoring in ‘CS' Consider the following relational database: STUDENT (name, student#, class, major) COURSE (co
What are the comparison operator in sql, What are the comparison operator i...
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
When are they useful justify with an example, When are they useful? Justify...
When are they useful? Justify with an example. The temporary tables are commonly used to support specialized rollups or exact application processing needs. Unlike a permanent t
Read-set(t) and timestamps-optimistic concurrency contents, read-set(T) : E...
read-set(T) : Each data items that are read by a transaction T Timestamps : for all transaction T, the start-time and the end time are reserved for all the three phases.
List any two disadvantages of a database system, List any two disadvantages...
List any two disadvantages of a database system ? The disadvantages of database system are: • Database systems are difficult, complex, and time-consuming to design. • Substanti
What is a disjoint less constraint, What is a disjoint less constraint? ...
What is a disjoint less constraint? Ans: It needs that an entity belongs to no much more than one level entity set. Disjoint less constraint needs that an entity belongs to
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