Data views provide the following
The following figure shows native and interface SAS data
views and their relationship to SAS data files.
- Instead of using multiple DATA steps to merge SAS data sets by
common variables, you can construct a view that performs a multi-table join.
- You can save disk space by storing a view definition, which stores
only the instructions for where to find the data and how it is formatted,
not the actual data.
- Views can ensure that the input data sets are always current because
data is derived from views at execution time.
- Since views can select data from many sources, once a view is
created, it can provide prepackaged information to the information community
without the need for additional programming.
- Views can reduce the impact of data design changes on users.
For example, you can change a query that is stored in a view without changing
the characteristics of the view's result.
- With SAS/CONNECT software, a view can join together SAS data sets
that reside on different host computers, presenting you with an integrated
view of distributed company data.
Native and Interface SAS Data Views
You can use views in the following ways:
- as input to other DATA steps or PROC steps
- to migrate data to SAS data sets or to database management systems
that are supported by SAS
- in combination with other data sources using PROC SQL
- as pre-assembled sets of data for
users of SAS/ASSIST software,
enabling them to perform data management, analysis, and reporting tasks regardless
of how the data is stored.
Copyright 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.