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Tyler Perkins 2022-03-08 13:00:02 -05:00
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Databases are a way to store data and its relationships, and access it over a Databases are a way to store data and its relationships, and access it over a
network, with caching and other optimizations. network, with caching and other optimizations.
A Database Managemetn Sytems is a suite of applications for constructing and
maintaining the database and for offering ad hoc query facilities to users and
applications.
== Database Design Principle == == Database Design Principle ==
== Views ==
A database view is a subset of a database and is based on a query that runs on
one or more database tables. There are essentially named queries.
=== dynamic views ===
dynamic views can contain data from one or two tables and automatically include
all of the columns from the specified table or tables. They are automatically
updated along with data in the source tables
=== static views ===
static views contain data from multiple tables and and the columns from said
tables are included via SELECT and WHERE commands.