Wednesday, July 22, 2009

ADO

Here's another post under the label 'Tech terms'. As always, these posts are tagged with label 'Tech terms' to be searched conveniently.

Today's term to understand is ADO:


  • A part of MDAC(Microsoft Data Access Components), it provides a layer between programming languages and OLE DB (a means of accessing data stores, whether they be databases or otherwise, in a uniform manner)
  • ADO allows a developer to write programs that access data without knowing how the database is implemented. You must be aware of your database for connection only. No knowledge of SQL is required to access a database when using ADO, although one can use ADO to execute arbitrary SQL commands. The disadvantage of this (i.e. using SQL directly) is that it introduces a dependency upon the type of database used.
  • It is positioned as a successor to Microsoft's earlier object layers for accessing data sources, including RDO (Remote Data Objects) and DAO (Data Access Objects). ADO was introduced by Microsoft in October 1996.

Tuesday, July 21, 2009

JET DB

With this post, I'm going to start a series to understand different tech terms. These posts are tagged with label 'Tech terms' to be search conveniently.


So let's begin with today's term which is Microsoft's JET DB:

  • It stands for Microsoft Jet Database Engine
  • JET stands for Joint Engine Technology
  • Over the years, Jet has become almost synonymous with Microsoft Access
  • The Microsoft Jet Database Engine is a database engine on which several Microsoft products were built.
  • first version: 1992
  • With version 2007 onwards, Access includes a new engine based on Jet, called the Microsoft Access Engine (ACE Engine). The ACE engine is fully backward-compatible with previous versions of the Jet engine, so it reads and writes (.mdb) files from earlier Access versions. The new engine introduces a new default file format, (.accdb),
  • Microsoft has no plans to natively support Jet under 64-bit versions of Windows.
  • The Jet Database Engine will remain 32-bit for the foreseeable future.