In this section: |
This documentation describes how to understand and use FOCUS Master and Access Files. This manual is part of the FOCUS documentation set.
References to z/OS apply to all supported versions of the OS/390, z/OS, and MVS operating environments.
The documentation set consists of the following components:
This manual includes the following chapters:
Chapter/Appendix | Contents | |
---|---|---|
1 |
Introduces data source descriptions and explains how to use them. |
|
2 |
Documents how to describe general aspects of a data source. |
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3 |
Documents how to describe groups of related fields or segments of a data source. |
|
4 |
Documents how to describe specific field level information of a data source. |
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5 |
Provides supplementary information specific to sequential, VSAM, and ISAM data sources. |
|
6 |
Provides information specific to FOCUS data sources. |
|
7 |
Describes how to create a new relationship between any two segments that have at least one field in common by joining them. |
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8 |
Describes how to create a view of a Master File that groups the information based on business logic. |
|
9 |
Describes how to use the CHECK command to validate a data source description. |
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10 |
Describes how you can access a FOCUS data source that does not use default naming conventions. |
|
11 |
Describes how you can use DBA security features to provide security for any FOCUS data source. |
|
A |
Contains Master Files and diagrams of sample data sources used in the documentation examples. |
|
B |
Describes how to obtain information about error messages. |
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C |
Describes how to read non-FOCUS data sources with user-written procedures. |
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D |
Describes how FOCUS numeric fields store and display data, how rounding occurs in calculations, and what happens in conversion from one format to another. |
|
E |
Lists the attributes supported for Master Files and Access Files for FOCUS data sources, and for Business Views. |
The following table describes the documentation conventions that are used in this manual.
Convention |
Description |
---|---|
THIS TYPEFACE or this typeface |
Denotes syntax that you must enter exactly as shown. |
this typeface |
Represents a placeholder (or variable) in syntax for a value that you or the system must supply. |
underscore |
Indicates a default setting. |
this typeface |
Represents a placeholder (or variable), a cross-reference, or an important term. It may also indicate a button, menu item, or dialog box option that you can click or select. |
Key + Key |
Indicates keys that you must press simultaneously. |
{ } |
Indicates two or three choices. Type one of them, not the braces. |
[ ] |
Indicates a group of optional parameters. None are required, but you may select one of them. Type only the parameter in the brackets, not the brackets. |
| |
Separates mutually exclusive choices in syntax. Type one of them, not the symbol. |
... |
Indicates that you can enter a parameter multiple times. Type only the parameter, not the ellipsis (...). |
. . . |
Indicates that there are (or could be) intervening or additional commands. |
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