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SQL

Structured Query Language

TermDefinition
SQL used to communicate with data stored in a relational database
primary key column or groups of columns used to uniquely id a table
foreign key column in one table refers to column in another table
normalization design of database without composite columns, few repeats and logical dependencies
select gets data from table
where defines condition then returns specific value from table
insert adds rows
joins 2 tables with similar data in 1 column or more
types of joins inner, right, left, full
union combination of 2 defined statements with same data type
types of relationships one to one, one to many, many to many
one to one both tables in a row represents unique data
one to many column has fk to another table and the one table doesn't refer to the many table
many to many many records in one table relate to many records in another table
Created by: SuzaK
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