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  1. SQL - Wikipedia

    SQL is designed for a specific purpose: to query data contained in a relational database. SQL is a set -based, declarative programming language, not an imperative programming language like C or BASIC.

  2. Database object - Wikipedia

    A database object is a structure for storing, managing and presenting application- or user-specific data in a database. Depending on the database management system (DBMS), many different types of …

  3. Data definition language - Wikipedia

    Structured Query Language (SQL), however, uses a collection of imperative verbs whose effect is to modify the schema of the database by adding, changing, or deleting definitions of tables or other …

  4. Database - Wikipedia

    Computer scientists may classify database management systems according to the database models that they support. Relational databases became dominant in the 1980s. These model data as rows and …

  5. NoSQL - Wikipedia

    Unlike relational databases, which organize data into rows and columns like a spreadsheet, NoSQL databases use a single data structure—such as key–value pairs, wide columns, graphs, or …

  6. Microsoft Azure SQL Database - Wikipedia

    The service handles database management functions for cloud based Microsoft SQL Servers including upgrading, patching, backups, and monitoring without user involvement.

  7. View (SQL) - Wikipedia

    View (SQL) In a database, a view is the result set of a stored query that presents a limited perspective of the database to a user. [1] This pre-established query command is kept in the data dictionary.

  8. Null (SQL) - Wikipedia

    Null (SQL) The Greek lowercase omega (ω) character is used to represent Null in database theory. In the SQL database query language, null or NULL is a special marker used to indicate that a data …

  9. Microsoft SQL Server - Wikipedia

    Microsoft SQL Server ... Microsoft SQL Server is a proprietary relational database management system developed by Microsoft using Structured Query Language (SQL, often pronounced "sequel").

  10. Referential integrity - Wikipedia

    In simple terms, 'referential integrity' guarantees that the target 'referred' to will be found. A lack of referential integrity in a database can lead relational databases to return incomplete data, usually …