Structured query language in Database.pptx
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SQL, or Structured Query Language, is a relational database language used to communicate with database management systems (DBMS). It features both interactive and programmatic methodologies for executing commands such as querying and updating data. SQL, considered a nonprocedural language, has been a standard since Oracle's support in 1979.
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Structured query language in Database.pptx
- 1. SQL
- 2. Introduction • SQL stands for “Structured Query Language.” • The Structured Query Language is a relational database language. • SQL is a medium which is used to communicate to the DBMS. • SQL commands consist of English-like statements which are used to query, insert, update, and delete data • SQL is referred to as nonprocedural database language.
- 3. • SQL can be used in two distinct ways in DBMS • Interactive SQL • Programmatic SQL
- 4. Interactive SQL •In this method, SQL commands are directly typed at command prompt •DBMS interprets and process SQL commands and display results
- 5. Programmatic SQL •In this type, SQL is embedded in Programming languages, like Java, Python, Cobol, Pascal, etc. •SQL needs host language, because SQL is not a complete computer programming Language.
- 6. SQL features – SQL is a language used to interact with the database. – SQL is a data access language. – SQL is based on relational tuple calculus. – SQL is a standard relational database management language. – The first commercial DBMS that supported SQL was Oracle in 1979. – SQL is a “nonprocedural” or “declarative” language.