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Which command is used to remove an index from the database in SQL?
Wiki User
∙ 10y ago
It may depend on what flavor of SQL, but whenever you want to get rid of something, DROP is generally your friend.
DROP INDEX <indexname>;
is likely to be the command needed, with various options depending on, again, exactly what flavor of SQL you're talking about.
Wiki User
∙ 10y ago
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What is drop command?
The "drop" command is typically used in programming or databases to remove a specific element or entity. For example, in SQL, you can use the "DROP TABLE" command to delete a table from a database. It is important to use this command carefully, as it permanently deletes the specified object.
What is the most common identifier used to index and link database?
The most common identifier used to index and link databases is the primary key. It uniquely identifies each record in a table and is used to establish relationships between different tables in a database.
What is a request for data from a database is called?
A request for data from a database is called a query. It is a command that is used to retrieve specific information from the database based on certain criteria.
What command is used to change contents of one database using the contents of another database by linking them on a common key field?
The SQL command UPDATE can be used to change contents of one database using the contents of another database by joining them on a common key field. You would typically use a query with a join condition between the two tables based on the common key field to update the fields in the target table with values from the source table.
Which SQL statement is used to delete data from a database?
The SQL statement used to delete data from a database is DELETE FROM table_name WHERE condition;. This statement deletes rows from the specified table based on the condition provided. Make sure to use caution when using DELETE statements as they permanently remove data from the database.
What is the select element?
To retrieve or modify data in the database query are used. There are four types of commands in SQL. Select command is data retrieval language command and is used to retrieve data from a database.In database there Four types of languages which contains various commands. Select command is the only command that is used for retrieval of data.
Is a database software or hardware?
A database, as used by a computer, is a software programme that is used to store data (information). A card index is also a database, written on pieces of card - so, technically, a card index is a physical thing (hardware?), possibly.
What command is used to change contents of one database using the contents of another database by linking them on a common key field?
The SQL command UPDATE can be used to change contents of one database using the contents of another database by joining them on a common key field. You would typically use a query with a join condition between the two tables based on the common key field to update the fields in the target table with values from the source table.
What is the most common identifier used to index and link database?
The most common identifier used to index and link databases is the primary key. It uniquely identifies each record in a table and is used to establish relationships between different tables in a database.
What is used to uniquely identify a record in a database program?
index field
What is meant by key in database?
A key is a unique part of the record that is used to index.
What is interperting?
There are number of commands in database (SQL) that are used to control , manipulate , retrieve data. One such command is DDL which is used for defining the schema of database.
How do you create a database?
In order to create a database link, the command CREATE DATABASE LINK is used. Depending on the requirement, private or public databases may be created.
What is ddl interpert?
DDL Interpreters are computer programs designed to process and execute Data Definition Language (DDL) statements. These statements are used to create, modify, and delete database structures such as tables, indexes, and constraints. DDL Interpreters play a crucial role in managing the database schema and ensuring data integrity.
What is command in DOS?
RD command is used to remove a directory (folder).
How do you create a database link?
In order to create a database link, the command CREATE DATABASE LINK is used. Depending on the requirement, private or public databases may be created.
What could be used to find and sort database records faster?
preverably monkey dung and remove its database
