tailieunhanh - SAS Data Integration Studio 3.3- P57

SAS Data Integration Studio P57:This manual is a companion to the online Help for SAS Data Integration Studio. The Help describes all windows in SAS Data Integration Studio, and it summarizes the main tasks that you can perform with the software. The Help includes examples for all source designer wizards, all target designer wizards, and all transformation templates in the Process Library tree. | 180 181 CHAPTER Optimizing Process Flows Building Efficient Process Flows 182 Introduction to Building Efficient Process Flows 182 Choosing Between Views or Physical Tables 182 Cleansing and Validating Data 183 Managing Columns 183 Drop Columns That Are Not Needed 183 Do Not Add Unneeded Columns 183 Aggregate Columns for Efficiency 184 Match the Size of Column Variables to Data Length 184 Managing Disk Space Use for Intermediate Files 184 Deleting Intermediate Files at the End of Processing 184 Deleting Intermediate Files at the End of Processing 185 Minimizing Remote Data Access 185 Setting Options for Table Loads 186 Using Transformations for Star Schemas and Lookups 186 Using Surrogate Keys 187 Working from Simple to Complex 187 Analyzing Process Flow Performance 187 Introduction to Analyzing Process Flow Performance 187 Simple Debugging Techniques 188 Monitoring Job Status 188 Verifying a Transformation s Output 188 Limiting a Transformation s Input 188 Redirecting Large SAS Logs to a File 189 Setting SAS Options for Jobs and Transformations 189 Using SAS Logs to Analyze Process Flows 189 Introduction to Using SAS Logs to Analyze Process Flows 189 Evaluating SAS Logs 190 Capturing Additional SAS Options in the SAS Log 190 Redirecting SAS Data Integration Studio s Log to a File 191 Viewing or Hiding the Log in SAS Data Integration Studio 191 Using Status Codes to Analyze Process Flows 191 Adding Debugging Code to a Process Flow 191 Analyzing Transformation Output Tables 192 Viewing the Output Table for a Transformation 192 Setting SAS Options to Preserve Intermediate Files for Batch Jobs 192 Using a Transformation s Property Window to Redirect Output Files 193 Adding a List Data Transformation to the Process Flow 193 Adding a User Written Code Transformation to the Process Flow 194 182 Building Efficient Process Flows A Chapter 11 Building Efficient Process Flows Introduction to Building Efficient Process Flows Building efficient processes to extract data from .