Index on a table in the database is just like an index (or content page) in a book - a quick look at an index can tell you where the actual data is located. This saves time and cost of scanning the whole table, thus making the database faster.
To drop an index in a database, you need to use a specific SQL command. First, you identify the name of the index you want to drop. Then, you use the DROP INDEX statement followed by the name of the index. This command removes the index from the database, making the associated data searchable without the index.
Considers costs associated with supplier nonperformance
It is a database, either a manual card index or an electronic computer system.
The word database is a noun that means a collection of data. Some words that are synonyms for database are directory, index, and table.
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.
Database administration
Index is a data structure that improve the performance of data.
The current performance of the ABX subprime index is fluctuating due to market conditions.
Table, index, trigger and column Table, index, trigger and column
The Experience Index can be increased by upgrading the lowest-scoring component on the lists. For example, if you scored badly in graphics performance, you would need to purchase a better graphics card.
Vague question, but if you are talking about a database field, the simple way is to create a unique index on the field (if the database supports it). The index will not allow duplicate values to be added to the database for that field and will generate an error if somebody tries.
index field