SQL Classes in Pune
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SQL is a standardized query language used to manage data in relational databases. It was originally developed in the 1970s and was first introduced commercially in 1979. SQL allows users to retrieve, insert, update, and delete data as well as create, modify, and delete databases. It works by dispatching queries to optimization engines that determine the best way to execute the requested task.
SQL Classes in Pune
- 1. What is SQL SQL is an abbreviation for structured query language, and pronounced either see- kwell or as separate letters. SQL is a standardized query language for requesting information from a database. The original version called SEQUEL (structured English query language) was designed by an IBM research center in 1974 and 1975. SQL was first introduced as a commercial database system in 1979 by Oracle Corporation. Mobile No. +91-7767904499 | E-mail :- [email protected] | www.classboat.com
- 2. A Brief History of SQL 1970 – Dr. Edgar F. "Ted" Codd of IBM is known as the father of relational databases. He described a relational model for databases. 1974 – Structured Query Language appeared. 1978 – IBM worked to develop Codd's ideas and released a product named System/R. 1986 – IBM developed the first prototype of relational database and standardized by ANSI. The first relational database was released by Relational Software which later came to be known as Oracle. Mobile No. +91-7767904499 | E-mail :- [email protected] | www.classboat.com
- 3. Actions on SQL SQL can execute queries against a database SQL can retrieve data from a database SQL can insert,update,delete records in a database SQL can create new databases SQL can create new tables in a database SQL can create stored procedures in a database SQL can create views in a database SQL can set permissions on tables, procedures, and views Mobile No. +91-7767904499 | E-mail :- [email protected] | www.classboat.com
- 4. SQL Process Classboat.com Mobile No. +91-7767904499 | E-mail :- [email protected] | www.classboat.com
- 5. SQL Process When you are executing an SQL command for any RDBMS, the system determines the best way to carry out your request and SQL engine figures out how to interpret the task. There are various components included in this process. These components are – Query Dispatcher Optimization Engines Classic Query Engine SQL Query Engine, etc. Classboat.comMobile No. +91-7767904499 | E-mail :- [email protected] | www.classboat.com
- 6. Why SQL is required SQL is required: To create new databases, tables and views To insert records in a database To update records in a database To delete records from a database To retrieve data from a database Classboat.com Mobile No. +91-7767904499 | E-mail :- [email protected] | www.classboat.com
- 7. If you want to know more about SQL language then visit https://www.classboat.com/tech/sql-classes-pune Mobile No. +91-7767904499 | E-mail :- [email protected] | www.classboat.com