Sql is both ansi and iso standard

Connect and share knowledge within a single location that is structured and easy to search. Is it supported by the major relational databases? Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 3 years, 5 months ago. Active 2 years ago. SQL standing for Structured Query Language is the standard language for relational database management systems. When it originated back in the s, the domain-specific language was intended to fulfill the need of conducting a database query that could navigate through a network of pointers to find the desired location.

Its application in handling structured data has fostered in the Digital Age. In fact, the powerful database manipulation and definition capabilities of SQL and its intuitive tabular view have become available in some form on virtually every important computer platform in the world. Some notable features of SQL include the ability to process sets of data as groups instead of individual units, automatic navigation to data, and the use of statements that are complex and powerful individually.

Used for a variety of tasks, such as querying data, controlling access to the database and its objects, guaranteeing database consistency, updating rows in a table, and creating, replacing, altering and dropping objects, SQL lets users work with data at the logical level.

SQL, just like many great things that outlasted the 70s, has a powerful history auspiciously intertwined with standards. Specifies a full outer join, which returns all values from both left and right sources. By default, joins are evaluated left to right. To override the default order of evaluation, use parentheses. A join source can itself be a join, and the results of joins can be joined with the results of other joins, as illustrated in the following pseudocode:.

In addition, all programs written in SQL are portable. They can often be moved from one database to another with very little modification. Previous Next JavaScript must be enabled to correctly display this content. How SQL Works The strengths of SQL provide benefits for all types of users, including application programmers, database administrators, managers, and end users.

Among the features of SQL are the following: It processes sets of data as groups rather than as individual units.