create table, Database Management System

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What are the advantages of creating a table from existing table?

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Dirty Reads: T10 reads a value which is updated by T9. This update has not been committed and T9 aborts. T9 T10 Value of x old value = 200

Field, examples of fields in a database

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What are the properties in a relation ? In a relation Ordering of rows is immaterial and No two rows are identical.

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What is the role of ORDER By Clause? ORDER BY clause: The ORDER BY clause permits you to sort the records in your result set. The ORDER BY clause can just be used in select s

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