Virtual Databases

A virtual database is a pseudo database, the data from which resides in "real" databases.

Collections of Data

Many databases gathered under one "umbrella" virtual database. A single search or lookup will work across all of them.
Many issues to solve: e.g. compatibility of datatypes, security.

One Database, Several Configurations

Sub-databases (data of interest to a particular group)
Configurations for different machines (e.g. small memory vs. large memory).

Table of Contents

Virtual Databases

A virtual database is a pseudo database, the data from which resides in "real" databases.

Collections of Data

Many databases gathered under one "umbrella" virtual database. A single search or lookup will work across all of them.
Many issues to solve: e.g. compatibility of datatypes, security.

One Database, Several Configurations

Sub-databases (data of interest to a particular group)
Configurations for different machines (e.g. small memory vs. large memory).

Virtual Databases

A virtual database is a pseudo database, the data from which resides in "real" databases.

Collections of Data

Many databases gathered under one "umbrella" virtual database. A single search or lookup will work across all of them. Many issues to solve: e.g. compatibility of datatypes, security.

One Database, Several Configurations

Sub-databases (data of interest to a particular group) Configurations for different machines (e.g. small memory vs. large memory).

Many databases gathered under one "umbrella" virtual database. A single search or lookup will work across all of them.
Many issues to solve: e.g. compatibility of datatypes, security.

Sub-databases (data of interest to a particular group)
Configurations for different machines (e.g. small memory vs. large memory).