Caché System Administration Guide - InterSystems Documentation

Configuring Caché
In the simplest case, there is a one-to-one correspondence between a namespace and a database, but
many systems take advantage of the ability to define a namespace that provides access to data in
multiple databases. For example, a system could have multiple namespaces, each of which provides
a different logical view of the data stored within one or more physical databases.
For more details, see the following sections:
• Configuring Namespaces
• Configuring Databases
See the Config entries in the Caché Class Reference for information about updating namespaces,
databases, and mappings programmatically.
2.2 Configuring Namespaces
A namespace is a collection of data and programs in a virtual work space. In a namespace, you can
define the globals that various groups or people need. For example, if your accounting department
needs to use certain globals that exist on different systems or in different directories, you can set up a
single namespace that references all the accounting globals and databases on your network.
Caché comes with the following predefined namespaces:
• %SYS — System management information and utilities.
• DOCBOOK — Documentation.
• SAMPLES — Sample code and applications.
• USER — Empty at installation. Typically used for application development.
Perform the following procedures for configuring namespaces from the [Home] > [Configuration] >
[Namespaces] page of the System Management Portal:
• Create a Namespace
• Modify Default Database Mapping
• Add Global, Routine, and Package Mapping to a Namespace
The size of the namespace table is automatic and no longer configurable.
14 Caché System Administration Guide