Update for 28-02-22 16:15

tech/databases.wiki

@@ -6,8 +6,27 @@ network, with caching and other optimizations.
 == 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.
+
+
+
+
 == SQL ==
 
-See [[../lang/sql]]
+See [[sql]]
 
 [[index]]

tech/sql.wiki

@@ -3,9 +3,48 @@
 Stuctered Query Language is a language that describes a method of fetching and
 describing the relationship between different types of data
 
+== Views ==
+
+A view can be created with the following command
+
+{{{
+CREATE VIEW [view_name] AS
+SELECT column1, column2, ...
+FROM table
+WHERE condition;
+  }}}
+
+For example, this view returns all products witha price higher than the average
+price of the table
+
+{{{
+CREATE VIEW [Products above average price] AS
+SELECT Name, Price
+FROM Products
+WHERE Price > (SELECT AVG(Price) FROM Products)
+
+SELECT * FROM [Prodcuts above average price]
+  }}}
+
+== Acess control commands ==
+
+Two commands for managing access rights
+
+* grant
+  * used to grant one or more access rights or can be used to assign a user to
+    a role
+* revoke
+  * revokes the acess rights
+
+Typical access rights include
+
+* select
+* insert update
+* delete
+* references
 
 == Also see ==
 
-[[../tech/databases]]
+[[databases]]
 
-[[../index]]
+[[index]]

tech/sqli.wiki

@@ -7,3 +7,9 @@ An attack typically works by prematurely terminating a text string and
 appending a new command. Because the inserted command may have additional
 strings appended to it before it is executed, SQLI attack string generally end
 with a comment or `--`.
+
+
+
+== Also see ==
+
+Also see [[sql]]