AUTONUMBER Meaning and
Definition
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Autonumber refers to a feature or data type found in databases that automatically assigns a unique numerical value to each new record entered into a table or database. It is particularly common in relational database management systems (RDBMS) such as Microsoft Access, MySQL, or Oracle.
The autonumber function greatly simplifies the process of creating and managing unique identifiers for records within a database. When a new record is inserted into a table, the autonumber feature automatically generates the next available number and assigns it to that record. This ensures that each record has a unique identification number, which is essential for proper organization and retrieval of data.
The primary objective of using autonumber is to provide a simple and efficient way to create a key field that is unique for each record, without requiring manual input or potential errors associated with user-assigned values. The autonumber field is typically created as an integer or long integer data type and is often set to start at 1 and increment by 1 for each new record.
The autonumber field can also be used as a primary key, serving as the unique identifier on which other tables may establish relationships. It enables fast and accurate searching, sorting, and accessing of records within a database. Additionally, the autonumber feature aids in maintaining data integrity and preventing duplicates in tables.
Etymology of AUTONUMBER
The word "autonumber" is a compound word formed by combining the prefix "auto-" and the word "number". The prefix "auto-" is derived from the Greek word "autos", meaning "self" or "oneself". It often signifies self-operation or automaticity. The word "number" originates from the Latin word "numerus", which means "number" or "count". Therefore, "autonumber" can be understood as a term that refers to self-generating or automatically assigned numbers, often used in database management systems.
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