- Structured Query Language, or SQL (pronounced see-quel), is the language used for querying and manipulating data, and defining structures in databases.
- Data definition language (DDL), data manipulation language (DML), and data control language (DCL)
- Queries, clauses, predicates, expressions, statements, and white space.
- To avoid redundant data, optimize database performance, and ensure data integrity.
- First normal form, second normal form, and third normal form.
- Ensuring consistency and accuracy of data.
- Entity, referential, and domain integrity.
- The top four are Oracle, MySQL, SQL Server, and PostgreSQL.
- It's available for free, it offers a lot of functionality for system and database administrators, it's easy to use and implement, and it's fast and stable.
- Licensing is expensive, and it may require significant database administrator resources after...
Germany
Slovakia
Canada
Brazil
Singapore
Hungary
Philippines
Mexico
Thailand
Ukraine
Luxembourg
Estonia
Lithuania
Norway
Chile
United States
Great Britain
India
Spain
South Korea
Ecuador
Colombia
Taiwan
Switzerland
Indonesia
Cyprus
Denmark
Finland
Poland
Malta
Czechia
New Zealand
Austria
Turkey
France
Sweden
Italy
Egypt
Belgium
Portugal
Slovenia
Ireland
Romania
Greece
Argentina
Malaysia
South Africa
Netherlands
Bulgaria
Latvia
Australia
Japan
Russia