Question

what is use of query explain with an example​

Answer 1

Answer:

Query by Example (QBE) is a database query language for relational databases. It was devised by Moshé M. Zloof at IBM Research during the mid-1970s, in parallel to the development of SQL. It is the first graphical query language, using visual tables where the user would enter commands, example elements and conditions.

Explanation:

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Answer 2

Explanation:

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