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Microsoft Access is a relational database program from Microsoft that combines a graphical user interface and software-development tools. It can store data in its own format or import or link to other databases, and supports Visual Basic for Applications programming language.
Learn about the history, architecture, features and compatibility of the Access Database Engine, a database engine used by Microsoft products. The Access Database Engine has been superseded by SQL Server for larger databases and supports SQL queries, Unicode, views and replication.
SQL is a declarative language used to manage data, especially in a relational database management system (RDBMS). It consists of many types of statements, such as Data Query Language (DQL), Data Definition Language (DDL), Data Control Language (DCL), and Data Manipulation Language (DML).
A database is an organized collection of data or a type of data store based on a database management system (DBMS). Learn about the history, design, functions and classification of databases and DBMSs, from navigational to NoSQL, and their applications.
A relational database (RDB) is a database based on the relational model of data, as proposed by E. F. Codd in 1970. A database management system used to maintain relational databases is a relational database management system (RDBMS).
A query plan is a sequence of steps to access data in a SQL database. Learn how to view, understand and improve query plans using graphical, textual or plan table tools.
A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space. Learn about the types, purposes, and limitations of indexes in this Wikipedia article.
SQL-92 was the third revision of the SQL database query language, published in 1992. It introduced many new features such as data types, operations, constraints, and information schema.