diff --git a/tech/databases.wiki b/tech/databases.wiki index 1ce1f70..635bc7f 100644 --- a/tech/databases.wiki +++ b/tech/databases.wiki @@ -3,25 +3,13 @@ Databases are a way to store data and its relationships, and access it over a 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 == -== 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. -