What is SQL


  • SQL stands for Structure query language.
  • SQL is a high level language used to interact with database.
  • Users write SQL statements which is accepted by rom which in term responds with an output or performs an action within the database

Data and Database


  • Any useful information in and around us. Ex, Name, age, weight, etc.

What is Database ?

  • A systematic collection of data .
  • Data in the database is organized and it makes easy to manage the data.

What is the Need of Database ?

  • Size
  • Easy of Updating.
  • Redundancy
  • Security
  • Accuracy
  • Importance