What are vdl and sdl?
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Write a query to remove duplicate rows from a table?
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?
What is default value database?
How is view stored in database?
What is rdbms data?
What does <> mean in database?
What are the four objectives of the selection of a data type?
What is system r?
What are the advantages of database system?
What is a relation schema?
What is Distributed database ?
Which database server is best?
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