Memorex LOCK - VERSION 2-24 Información técnica Pagina 25

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Dataset Name Catalog Entries
User Reference
Connectivity Systems, Inc.—Copyright © 2006
Use Pursuant to Company Instructions
1-7
BIM-EPIC Datasets
Dataset Name Catalog Entries
Description The Dataset Name (DSN) Catalog information controls dataset actions
based on information contained in the DSN Catalog. All information
pertaining to a cataloged dataset name is called a DSN Catalog entry. The
format and contents of an entry are described below.
DSN Catalog information is divided into two levels: the BIM-EPIC
Dataset Definition (EDD) level and the Version level.
Each EDD contains all attributes associated with a unique dataset name.
When a controlled dataset is opened or closed, BIM-EPIC uses these
attributes to manage processing. The EDD is discussed later in this
chapter.
BIM-EPIC enters version information automatically as each version is
created. At least one catalog record is created for each version of the
dataset. If the version spans more than one volume or extent, a catalog
record is created for each additional volume or extent.
Version information includes information such as the location of the
version, the expiration date, and the creation date. BIM-EPIC uses this
data to control the use and retention of each version.
The following sections provide detailed explanations of the data
contained in each DSN Catalog entry and how the various fields operate
in conjunction with each other.
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