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Explain the main advantages of DBMS over File Oriented System ?
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
Increases efficiency : Data is stored close to most often used site, therefore retrieval would be faster. Also, data that is not required by local applications is not stored, there
define locking in simple language and decribed it
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
Which component is not included in database environment ? A users component is not included in database environment.
multidimensional data model
Describe queries with complex types? The present extension of the SQL query language deal with the complex type Let us start with the simple example: Find the title and t
in case of functional dependencies how we get the higher normal form.
The definition of the classes and operation can often be adjusted to increase the amount of inheritance". Justify the above statement. Adjustment of Inheritance The def
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