SQL provides mechanisms for most kinds of database manipulations. A table can be linked to another table using a foreign key. One of the keys is designated to be the primary key. Each table has at least one column, and each column has a type associated with it, which limits the type of data that can be stored in the column. Relational databases store data in tables, which consist of rows and columns. However, we still need to understand how relational databases work. For instance, Ruby on Rails abstracts all database access and makes most direct access unnecessary, as do component technologies such as Enterprise JavaBeans and lots of object-oriented frameworks. Many of them hide the complexities of the underlying data structures. There are tools available to help us create and manage databases. The script engine can be invoked either from within the Windows GUI or at a Command Prompt, or IE. Scripts written in VBScript are interpreted by a script engine that processes the instructions to execute the script. VBScript is a scripting language and it shares the same core VB language. ASP and VBScript should not be confused with ASP.NET which uses the. Although it resembles VB in syntax, it is a separate language and it is executed by vbscript.dll as opposed to the VB runtime. It can be used in Windows scripting and client-side web page scripting for IE. It is the default language for Active Server Pages (ASP).
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