
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.
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 …
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 …
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 …
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 …
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.
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.
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 …
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").
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 …