Database handler is a software component that manages access to a database. Its spelling can be explained using the International Phonetic Alphabet (IPA) transcription system, which represents the sounds of speech. "Database" is pronounced /ˈdeɪtəbeɪs/, with stress on the first syllable and a schwa sound in the final syllable. "Handler" is pronounced /ˈhændlər/, also with stress on the first syllable and a schwa sound in the final syllable. Together, the word is pronounced /ˈdeɪtəbeɪs ˈhændlər/.
A database handler, also known as a database manager or database connector, is a software component or program that facilitates the interaction between an application or user and a database management system (DBMS). It acts as an intermediary between the application and the database, enabling the retrieval, storage, manipulation, and management of data.
The primary role of a database handler is to establish a connection between the application and the database. It provides functions and methods that allow the application to send queries or retrieve information from the database. This includes tasks such as creating, updating, and deleting data, as well as managing transactions and ensuring data integrity.
Database handlers act as bridges, translating high-level commands or requests from the application into the low-level database operations understood by the DBMS. They handle the communication with the DBMS, including sending SQL statements or queries, parsing and executing them, and retrieving the results.
In addition to basic database operations, a database handler often provides additional functionalities like connection pooling, caching, or data mapping. Connection pooling allows efficient management of database connections, while caching improves performance by storing frequently accessed data in memory. Data mapping assists in mapping objects in the application to their corresponding database representation.
Overall, a database handler plays a crucial role in enabling applications to leverage the features and functionality of a DBMS, providing an interface for developers or users to interact with the underlying database efficiently and securely.
The word "database handler" does not have a specific etymology on its own since it is a combination of two terms: "database" and "handler".
The term "database" originates from the mid-20th century, combining the words "data" and "base". "Data" comes from the Latin word "datum", meaning "thing given", while "base" refers to the foundation or bottom part.
The term "handler" has roots in the English language and can be traced back to the Old English word "handlian", which means "to touch or seize with the hand". Over time, it evolved to indicate someone or something that manages or deals with a particular task.
Therefore, when combined, "database handler" refers to a software component or program that manages or deals with the manipulation, organization, and retrieval of data in a database.