Structured Query Language (SQL) (pronounced S-Q-L; historically "sequel") is a domain-specific language used to manage data, especially in a relational...
40 KB (3,765 words) - 07:06, 2 September 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) - 10:19, 17 September 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) - 21:26, 20 August 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 (6,396 words) - 15:43, 25 September 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 (2,404 words) - 04:02, 19 September 2024
PostgreSQL (/ˌpoʊstɡrɛskjuˈɛl/ POHST-gres-kew-EL) also known as Postgres, is a free and open-source relational database management system (RDBMS) emphasizing...
99 KB (8,586 words) - 08:02, 23 September 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 (4,157 words) - 01:48, 15 August 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
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 (3,904 words) - 12:19, 7 August 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