SQL syntax is similar to the English language, which makes it relatively easy to write, read, and interpret. SQL ( Structured Query Language) is a programming language used to communicate with data stored in a relational database management system. Most relational database management systems use the SQL language to access the database. What is a Relational Database Management System (RDBMS)?Ī relational database management system (RDBMS) is a program that allows you to create, update, and administer a relational database. The table also has four rows, or records, in it (one each for Natalia, Ned, Zenas, and Laura). The set of columns and data types make up the schema of this table. The name and country columns store string data types, whereas age stores integer data types. In the table above, there are three columns ( name, age, and country). Columns are labeled with a descriptive name (say, age for example) and have a specific data type.įor example, a column called age may have a type of INTEGER (denoting the type of data it is meant to hold). Tables can also have many columns of data. Tables can have hundreds, thousands, sometimes even millions of rows of data. Often, data in a relational database is organized into tables. It uses a structure that allows us to identify and access data in relation to another piece of data in the database. This data is usually structured in a way that makes the data easily accessible.Ī relational database is a type of database. A database is a set of data stored in a computer.
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