SAS Certification Prep Guide: Base Programming for SAS 9, Third Edition

Overview

Introduction

Sometimes raw data files contain data for several observations in one record. Data can be stored in this manner to reduce the size of the entire data file.

Each record can contain

• repeating blocks of data that represent separate observations

  Repeating Blocks of Data

  
• an ID field followed by an equal number of repeating fields that represent separate observations

  ID Field with Repeating Fields

  
• an ID field followed by a varying number of repeating fields that represent separate observations.

  ID Field with ...