• Metadata: Metadata is defined as "data on the body of the data" and can be found in library catalogues. In practice, metadata's usage comes in evaluating database data, although it can also be utilised for other purposes.
• Namespace: In the.NET language, namespaces are NOTHING but an organised manner of representing classes, structures, and interfaces. All .NET Languages have access to namespaces, which are hierarchically organised indexes of a class library.
• JIT: It is an ACRONYM for Just in Time compiler, which is a component of the runtime execution environment. JIT is DIVIDED into three categories:
  • Normal JIT: Normal JITs compile called functions or procedures at runtime and compile them for the first time when they are invoked.
  • PRE-JIT: Pre JITs compile an application before it is deployed.
  • Econo-JIT: Econo JITs compile called functions and procedures at runtime.

The System.Data namespace is used to access and manage data from the required data source. This namespace DEALS only with the data from the specified database.