SAS Data Integration Studio 3.3- P27 ppsx

Registering Data Sources 4 Save the Metadata for the Tables 125Save the Metadata for the Tables After you specify a group for storing the source tables, use the Wizard Finish window to r

Registering Data Sources 4 Save the Metadata for the Tables 125

Save the Metadata for the Tables

After you specify a group for storing the source tables, use the Wizard Finish window

to review the metadata that you entered

Display 8.5 Wizard Finish Window

Review the text in the metadata pane on the Wizard Finish window Shown

previously is the metadata for the CUSTOMER, ORDERS, and ORDER_ITEM source

tables If the metadata is correct, click Finish The metadata for the tables is written

to the current metadata repository

At this point, you could add the metadata that you just created to a job, or you could check in the metadata

126 Check In the Metadata 4 Chapter 8

Check In the Metadata Under change management, new metadata objects are added to the Project tree on the SAS Data Integration Studio desktop, as shown in the following display

Display 8.6 Project Tree with Metadata Objects for Three Tables

You must check in the new table metadata in order to save it to the change-managed repository

1 In the Project tree, select the repository icon (Project: etlDev4).

2 From the SAS Data Integration Studio menu bar, select Project I Check In

Repository.

All metadata objects in the project repository will be checked into the change-managed repository The new objects will be visible in the Inventory tree

Example: Using a Source Designer to Register an External File

Preparation

An external file is a file that is created and maintained by a host operating system or

by another vendor’s software application SAS can read data from and route output to external files

Suppose that you wanted to create a report that requires information from a comma-delimited external file Your first task would be to register this file so that it an

be included in a job that creates the report Because the file is in comma-delimited format, you would use the Delimited External File source designer wizard to register the file

Assume that the following preparations have been made:

3 The comma-delimited external file is called employeeFlatFile.csv It contains information about dependents of Orion Star Sports employees

3 You have selected a default SAS application server for SAS Data Integration Studio, as described in “Selecting a Default SAS Application Server” on page 96 This server can access the employeeFlatFile.csv file

Registering Data Sources 4 Start SAS Data Integration Studio and Open the Appropriate Metadata Profile 127

3 The main metadata repository is under change-management control In the

current example, after you register the file, you must check in its metadata For details about change management, see “Working with Change Management” on page 113

About External File Source Designers

External file source designers enable you to do the following tasks:

3 Register delimited, fixed-width, and user-defined external files The supported file types are TXT, DAT, and CSV

3 Process variable-length records and fixed-length records

3 Process character, numeric and nonstandard numeric data (such as currency data

or signed numbers)

3 Specify how missing values should be treated

3 Process data in which one record is spanned over multiple lines, as well as data in which multiple records are included in a single data line

3 Remove columns, arrange the order of the columns, change attributes of any column, and add new columns in the metadata

The external file source designers use a sample of data from the external file,

together with metadata that you enter, to estimate the length and data type of the columns You can specify the rows used in sampling of data by specifying the start record and how many records should be included in the sample To find additional information about all of the external file source designers, see the relevant topics in the SAS Data Integration Studio Help From the SAS Data Integration Studio desktop, follow these steps to display the relevant topics:

1 From the menu bar, select Help I Contents to open the "Introduction to SAS

Data Integration Studio” topic

2 Select Examples I Source Designer Examples to open the “Source Designer

Examples” topic

3 Select the topic for the type of external file that you need to process

Note: For information about using external files in SAS Data Integration Studio, follow the reference to the “Managing External Files in SAS Data

Integration Studio” topic found at the end of the “Overview” section in each of the external file examples.4

Start SAS Data Integration Studio and Open the Appropriate Metadata Profile

Follow these steps to begin work in SAS Data Integration Studio:

1 Start SAS Data Integration Studio as described in “Starting SAS Data Integration Studio” on page 93

2 Open the appropriate metadata profile as described in “Opening a Metadata Profile” on page 95

The next task is to select an external file source designer

128 Select an External File Source Designer 4 Chapter 8

Select an External File Source Designer

To select an external file source designer, from the SAS Data Integration Studio

menu bar, select Tools I Source Designer.

The Source Designer selection window displays, as shown in the following display

Display 8.7 Source Designer Selection Window

From this window, take the following actions:

1 Open External Files.

2 Click Delimited External File.

3 Click Next.

The wizard attempts to open a connection to the default SAS application server If there is a valid connection to this server, you might be prompted for a user name and a password After you provide that information, the External File Location window displays

Registering Data Sources 4 Specify Location of the External File 129

Specify Location of the External File

Follow these steps to specify the location of the external file:

1 Specify a physical path to the external file in the File name field, as follows:

\\d1234\sources_external\employeeFlatFile.csv The following display shows the

completed External File Location window with the path specified to the external file

Display 8.8 External File Location Window

2 When you have set the correct path to the physical file, click Next The Delimiters

and Parameters window displays