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What are the disadvantages of relational approach? Disadvantages of relational approach: • Substantial hardware and system software overhead • May not fit all business models •
What is meant by mean time to failure? The mean time to failure is the amount of time that the system could run continuously without failure.
The functions of DBA ?
Explain the EXISTS and UNIQUE functions of SQL. Give an example for each? EXISTS: The EXISTS function takes one parameter that is a SQL statement. If any records exist which
Some disadvantages of File Oriented System ?
what is Nested relational model? Explain with examples.
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
What is Collation Collation is a kind of sort order. There are majorly 3 types of sort orders, namely: i.) Dictionary case insensitive ii.)Dictionary - case sensitive
Find a 3NF decomposition of the following relation scheme: University (Faculty, Dean, Department, Chair, Professor, Rank, Student}. The University relation satisfies the following
how design database from begining
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