tietokantatoimintojen

Tietokantatoimintojen refers to the operations that can be performed on a database. These operations are fundamental to managing and interacting with data stored within a database system. They allow users and applications to create, read, update, and delete data, as well as perform more complex queries and modifications.

The most basic set of database operations is often referred to as CRUD: Create, Read, Update, and Delete. Creating data involves adding new records or entries into a database table. Reading data is the process of retrieving information from the database, often using structured query language (SQL) or other query mechanisms to specify which data is needed. Updating data involves modifying existing records, changing values within specific fields. Deleting data means removing records from the database.

Beyond CRUD, database operations encompass a wider range of functionalities. These include data definition operations, which are used to create and modify the structure of the database itself, such as creating tables, defining relationships between them, and setting constraints. Data manipulation operations, which include CRUD, are used to manage the data content. Transaction management is another critical aspect, ensuring that a series of database operations are executed as a single, indivisible unit, either all succeeding or all failing, to maintain data integrity. Furthermore, database operations include security functions like user authentication and authorization, and performance-related operations such as indexing and query optimization to ensure efficient data retrieval.