Caché System Administration Guide - InterSystems Documentation

Configuring Data
Menu Item
NLS Settings
Source Control Settings
SQL Settings
Startup Settings
Task Manager Email Settings
Zen Report Settings
Documentation Source
Configuring NLS Settings section of this chapter
“Using Studio Source Control Hooks” appendix of Using
Caché Studio
Configuration Settings section of the Caché SQL
Reference
Startup Settings of Caché Additional Configuration
Settings Reference
Configuring Task Manager Email Settings section of
this chapter
Configuring Zen Report Settings section of this chapter
Most configuration changes can be done dynamically and do not require you to restart Caché. When
the update does require a restart, the portal notifies you.
This chapter covers the following topics:
• Configuring Data
• Configuring System Information
• Configuring Task Manager Email Settings
2.1 Configuring Data
Caché stores data — persistent multidimensional arrays (globals) as well as executable code (routines)
— in one or more physical structures called databases. A database consists of one or more physical
files stored in the local operating system. A Caché system may (and usually does) have multiple
databases.
Each Caché system maintains a database cache — a local, shared memory buffer used to cache data
retrieved from the physical databases. This cache greatly reduces the amount of costly I/O operations
required to access data and provides much of the performance benefits of Caché.
Caché applications access data by means of a namespace. A namespace provides a logical view of
data (globals and routines) stored in one or more physical databases. A Caché system may (and usually
does) have multiple namespaces. Caché maps the data visible in a logical namespace to one or more
physical databases. This mapping provides applications with a powerful mechanism for changing an
application’s physical deployment without changing application logic.
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