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.
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.
"append" command is used to append new records to a dbf file. You can "append blank" or you can "append from" another existing database file. Conditions can be specified while appending, eg; append from <filename> for <condition> (or) append while <condition>. Append can also be done from non dbf files, such as delimited text files.
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.
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.
(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.
BGL file normally used as a dictionary database file. Which helps to the dictionary software to add more lexical database.
index field
The 'touch' command creates a new empty file in Unix.
A key is a unique part of the record that is used to index.
i think it is bigtable database system which is built on google file system.
a file when referring to electronic systems can be a programme or sequence event recoding structure a database file is a set of created datasets used for storing information in an information management system . database files can then be used to retrieve the input information or used to inform a series of preset and manually created reports