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What is called query processing?
Query processing refers to the range of activities included in extracting data from a database.
non numeric literals
During the deletion of a tuple two cases can happen: Deletion of tuple in relation having the foreign key: In this type of case simply delete the desired tuple. For example, in
What is difference between primary index and secondary index? Primary Index a) It is an ordered file whose records are of fixed length along with two fields. b) Only base
sql is relationally complete-justify
Question 1 What are the advantages of DBMS approach in managing data? Question 2 What are the services provided by a database system Question 3 List and briefly describe
What are the two types of errors? The two types of errors are: a) Logical error b) System error
Which model is record based logical model? Network Modelis basically known as record based logical model.
Question 1 Suppose the employee employee id, name, designation, salary, attendance and address of any employee has to be stored in a database. You can store these data in a sequen
What is Information System?
statical data
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