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DBA need query optimization

Updated: 9/13/2023
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16y ago

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Data is inserted into a database. Users need to get information from the database. These requests are called "queries". Data is continually being inserted into the tables in the database. There is a utility called "update statistics" which gathers information from the table and feeds is to the "query optimizer". The query optimizer, based on information gathered from update statistics, chooses the most efficient path to gather the data for the user and return the results as quickly as possible. How often statistics must be updated is completely dependent upon the frequency and quantity of updates/inserts/deletes into the table. If the table is static (unchanged), then once update stats is ran, there is no need to run it again.

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Why DBA understand query optimization?

he is the main person for the data administration for the relational database management systems. therefore, he needs to understand the query plan and be able to suggest the suitable query plan that would satisfy the query.


What is query Optimization?

Queries of a database can be fast or slow. Depends on a lot of things. The size of the table, the amount of data you are requesting from the query, etc. One of the ways a dba can help query optimization, is by "updating statistics" on a table. Statistics of a table allows the query to find the most efficient way to gather the data from the table.


What is DBA regarding database?

The DBA for a database is the Database Administrator. The DBA's roles are to manage the installation and configuration of the database software, to manage the allocation of space, to manage security, and (in concert with the developer) to manage data organization and query optimization. There are other roles, such as supporting backup and recovery, but this is just a small list.


What does the acronym 'SQL DBA' means?

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What are the differences between a sql server dba and a sql dba?

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If a dba was listed on a lawsuit do you have to respond for the dba Or is it incorrectly listed on the lawsuit Shouldn't the LLC be listed instead?

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How do you use DBA in a sentence?

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