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What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
cardnality ratio for humanresource mangement system
Sparse and Dense Indexes These indexes in principle are the similar as that of indexes used at the back of the book. The key facts of the indexes are: They are arranged
Order by clause By using this rows can be sorted It is used in the last portion of select statement By default it gets ascending order DESC: is used
a set of possible data value of an attribute is called??
Consider the relations EMP(ENO,ENAME,AGE,BASIC_SALARY) WORK_IN(ENO,DNO) DEPT(DNO,DNAME,CITY) Express the following queries in SQL (i) Find names of employees who work in a dep
Describe the statement in SQL which allows to change the definition of a table? In SQL Alter statement is used to allow the changes the definition of a table.
What is key ? Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is
What is a recovery scheme? An integral part of a database system is a recovery scheme that can restore the database to the reliable state that existed before the failure.
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