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Questions and Answers
Which organization published the first SQL standard in 1986?
What is the standard version of SQL known as?
What does DDL stand for in SQL?
What does DML stand for in SQL?
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What is the purpose of views in SQL?
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Which organization developed SQL in the 1970s?
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What is the purpose of DDL statements in SQL?
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Which version of SQL added XML support?
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What is the equivalent of a row in SQL?
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What do DML statements in SQL primarily do?
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Study Notes
SQL Standards and History
- ANSI (American National Standards Institute) published the first SQL standard in 1986.
- The standard version of SQL is known as SQL-92.
SQL Components
- DDL stands for Data Definition Language.
- DML stands for Data Manipulation Language.
SQL Concepts
- The purpose of views in SQL is to provide a virtual table based on the result of an SQL statement.
- A tuple is the equivalent of a row in SQL.
SQL Development
- IBM developed SQL in the 1970s.
- SQL:2003 added XML support.
SQL Statements
- The purpose of DDL statements in SQL is to define the structure of a database, including creating and modifying tables, indexes, and relationships.
- DML statements in SQL primarily perform operations that modify the data, such as inserting, updating, and deleting data.
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Description
Test your knowledge of SQL with this quiz based on Chapters 5, 6, and 7 of "Fundamentals of Database Systems." Topics covered include SQL introduction, basic SQL data types, DDL statements (create, delete, update tables), specifying constraints and keys, example schema definition, and DML statements querying the database.
