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how to prepare a data dictionary for online examination system for certified courses?
definition and its work
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
what is query processing?
example of embedded SQL query
What are deadlocks? How can they be avoided? Ans: Deadlock considers to a particular condition when two or more processes are every waiting for another to release a resource,
Databases and data warehouses both are databases and both contains number of rows and columns of tables containing data. Data warehouse is really different from databases because d
What are stored and derived attributes? Stored attributes: The attributes keeps in a data base are known as stored attributes. Derived attributes: The attributes that are de
What are the three data anomalies that are likely to occur as a result of data redundancy? Can data redundancy be completely eliminated in database approach? Why or why not? A
management information system based on functional organisation
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