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Company XYZ is an advertising company. It has its own website but the search facilities offered are not reliable. The company is willing to invest to acquire new machines and sof
Components of database manager The above functions are reached by the database manager. The major elements of a database manager are: Authorisation control: This mod
Define outer union operation of the relational algebra. Compute the outer union for the relations R and S given below. Outer Join - If there are any values in one tabl
what is check point in database management system
What is the max. no. Of structures that can be included in a table or structure. Nine.
What are the types of storage devices? Primary storage Secondary storage Tertiary storage Volatile storage Nonvolatile storage
how map binary relation one to one
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
Example -Find the employee name, salary, department number and average salary of his/her department, for those employees whose salary is more than the average salary of that depart
Define Deadlock detection If a system does not employ a few protocols that make sure deadlock freedom, after that a detection and recovery scheme should be used. An algorithm
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