JavaScript is a scripting language that can run wherever there is a suitable script interpreter such as Web browsers, Web servers, or the Windows Scripting Host. The scripting environment used to run JavaScript greatly affects the security of the host machine. A Web page with JavaScript runs within a Web browser in much the same way as Java applets and does not have access to host machine resources. An Active Server Page (ASP) or a Windows Scripting Host (WSH) script containing JavaScript is potentially hazardous since these environments allow scripts unrestricted access to machine resources (file system, registry, etc.) and application objects.

The data engine for Microsoft Access and other Microsoft desktop products. Microsoft Access ships with Jet. Microsoft Visual Basic also uses Jet as its native database. Jet can also be accessed by Excel, Word, Project, SQL Server 7, and PowerPoint through VBA (Visual Basic for Applications).

A task, such as a backup procedure, performed by a system. In SQL Server 7, you can schedule jobs to run at regular intervals or when an alert is triggered. A job can run a Transact-SQL command, a command-prompt utility, a Visual Basic or JavaScript script, or replication procedures.

Defines the low-level access to underlying database structures in Exchange Server 4.0 and 5.0. JET was superceded with ESE in Exchange Server 5.5 and Exchange 2000. See also
Extensible Storage Engine (ESE).

These are not viruses, but may contain a virus if infected or otherwise altered. Also known as Practical Joke Programs.