Structured Query Language (SQL) (pronounced S-Q-L; historically "sequel") is a domain-specific language used to manage data, especially in a relational...
39 KB (3,757 words) - 12:24, 5 August 2024
In computing, SQL injection is a code injection technique used to attack data-driven applications, in which malicious SQL statements are inserted into...
41 KB (4,237 words) - 14:19, 26 July 2024
Microsoft SQL Server (Structured Query Language) is a proprietary relational database management system developed by Microsoft. As a database server,...
61 KB (7,116 words) - 14:22, 9 June 2024
MySQL (/ˌmaɪˌɛsˌkjuːˈɛl/) is an open-source relational database management system (RDBMS). Its name is a combination of "My", the name of co-founder Michael...
67 KB (6,399 words) - 00:01, 24 July 2024
NoSQL (originally referring to "non-SQL" or "non-relational") is an approach to database design that focuses on providing a mechanism for storage and...
29 KB (2,400 words) - 21:19, 5 July 2024
PostgreSQL (/ˈpoʊstɡrɛs ˌkjuː ˈɛl/, POHST-gres kyoo el), also known as Postgres, is a free and open-source relational database management system (RDBMS)...
98 KB (8,581 words) - 22:48, 23 July 2024
The history of Microsoft SQL Server begins with the first Microsoft SQL Server database product – SQL Server v1.0, a 16-bit relational database for the...
43 KB (4,149 words) - 05:13, 9 July 2024
PL/SQL (Procedural Language for SQL) is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available in Oracle...
31 KB (3,903 words) - 00:38, 26 July 2024
In SQL, null or NULL is a special marker used to indicate that a data value does not exist in the database. Introduced by the creator of the relational...
62 KB (7,601 words) - 02:41, 24 July 2024
A join clause in the Structured Query Language (SQL) combines columns from one or more tables into a new table. The operation corresponds to a join operation...
42 KB (4,777 words) - 15:02, 30 July 2024