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Why do we need database?
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Explain 4nf?
What are five main functions of a database administrator?
what are database files, control files and log files. How many of these files should a database have at least? Why?
What are the drawback of rdbms?
What is a data source (ds)?
How does index hunting help in improving query performance?
What is the benefit of database?
Explain 5nf?
Explain what is meant by asymmetrical protocols?
What do you understand by intension and extension?
Mention the different languages present in dbms
Let?s say you have 100,000 records and you want to delete 95,000 at a time and keep only 5 thousand. But in local memory you don?t have enough space for 95,000 records. What do you do in this case? How do you delete without any problem with time and performance?
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