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What do you use the CHGRP command for?
The CHGRP command is used to change the ownership of a specific file or directory. More information about this command can be found on the IBM Help Index website.
Which command is used to remove an index from the database in SQL?
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.
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.
What is the use of an index?
(If that's the question being asked...) Indexing in a database system or a simple file-oriented system is used to make different records easier to access quickly. An index would be used to find data based on a certain key value quickly by going directly to the first record with that key, instead of searching the entire database or file. Indices are also handy for linking one file to another, such as with related information in different tables in a relational database system.
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
How do you open a bgl file?
BGL file normally used as a dictionary database file. Which helps to the dictionary software to add more lexical database.
What is a file command used to create or start a new file?
The 'touch' command creates a new empty file in Unix.
What is meant by key in database?
A key is a unique part of the record that is used to index.
Which database used for Google?
i think it is bigtable database system which is built on google file system.
