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Some disadvantages of File Oriented System?
How is the database organised in Oracle? Database organized within Oracle in terms of table and table holds attributes and values. A database consists of one or more logical
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
Create role named role_table that allows a user to create tables. Using role_table allow users kripa and reena to create tables. CREATE ROLE role_table; GRANT CREATE ANY TABLE
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Benefits: It limits data access. It makes difficult queries look easy. It permits data independence. It presents dissimilar views of the similar data.
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what is specialization?
Add generation capabilities and/or tailor the built-in functionality of generator. This enables you to produce "all" the test data for the MySQL tables you produced in the previous
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
What is data model? Explain object based and record based data models? Ans: A data model is an abstract model in which describes how data is represented and accessed. (i)
The typical file-oriented system is supported by a conformist operating system. Permanent records are stored in a variety of files and a number of different application programs are written to extract records from and add records to the appropriate files.
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