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What is the main four phases of query processing in dbms?

Query processing can be divided into four main phases: decomposition, optimization, code generation, and execution.


Heuristics that are used to improve the processing of a query in database management?

the hauristic that should be applied to improve the processing of a 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.


Query processing in a distributed database environment?

its a BEAR


Can write query within the query?

Yes, you can have a query inside a query. That is known as a sub-query.


What is post query and pre query?

pre query


A query that prompts for input whenever it is run is a run-time query?

A query that prompts for input whenever it is run is a Paremeter Query


How to solve the query processing of distributed database management system?

o


What is a nested query?

It is a query inside another query. Sometimes we might use one query to reduce down the amount of data to go through and then use another query based on the output of that query to get what you want. The first query is inside or nested in the first query.


What is query processor in distributed dbms?

The query processor in a distributed DBMS is responsible for receiving and analyzing queries from users or applications, determining how to execute the query across multiple distributed nodes, and coordinating the execution of the query to retrieve the desired data efficiently. It optimizes query performance by considering factors such as data distribution, network latency, and data transfer costs across distributed nodes.


What are subqueries used for in a database?

A subquery is basically a query inside another query. Sometimes a main query needs to process data that is the result of another query. To extract that data a subquery could be built into a field in a main query. This is known as a subquery.A subquery is basically a query inside another query. Sometimes a main query needs to process data that is the result of another query. To extract that data a subquery could be built into a field in a main query. This is known as a subquery.A subquery is basically a query inside another query. Sometimes a main query needs to process data that is the result of another query. To extract that data a subquery could be built into a field in a main query. This is known as a subquery.A subquery is basically a query inside another query. Sometimes a main query needs to process data that is the result of another query. To extract that data a subquery could be built into a field in a main query. This is known as a subquery.A subquery is basically a query inside another query. Sometimes a main query needs to process data that is the result of another query. To extract that data a subquery could be built into a field in a main query. This is known as a subquery.A subquery is basically a query inside another query. Sometimes a main query needs to process data that is the result of another query. To extract that data a subquery could be built into a field in a main query. This is known as a subquery.A subquery is basically a query inside another query. Sometimes a main query needs to process data that is the result of another query. To extract that data a subquery could be built into a field in a main query. This is known as a subquery.A subquery is basically a query inside another query. Sometimes a main query needs to process data that is the result of another query. To extract that data a subquery could be built into a field in a main query. This is known as a subquery.A subquery is basically a query inside another query. Sometimes a main query needs to process data that is the result of another query. To extract that data a subquery could be built into a field in a main query. This is known as a subquery.A subquery is basically a query inside another query. Sometimes a main query needs to process data that is the result of another query. To extract that data a subquery could be built into a field in a main query. This is known as a subquery.A subquery is basically a query inside another query. Sometimes a main query needs to process data that is the result of another query. To extract that data a subquery could be built into a field in a main query. This is known as a subquery.


Can you use query language to extrapolate information from a database?

Yes. That is one of the things that a query is used for.Yes. That is one of the things that a query is used for.Yes. That is one of the things that a query is used for.Yes. That is one of the things that a query is used for.Yes. That is one of the things that a query is used for.Yes. That is one of the things that a query is used for.Yes. That is one of the things that a query is used for.Yes. That is one of the things that a query is used for.Yes. That is one of the things that a query is used for.Yes. That is one of the things that a query is used for.Yes. That is one of the things that a query is used for.