SAS/ACCESS Interface to ADABAS Software

Updating a SAS Data File with ADABAS Data

You can update a SAS data file with ADABAS data described by a view descriptor, just as you can update a SAS data file with data from another data file. In this section, the term transaction data refers to the new data that are to be added to the original file. You can even do updates when the file to be updated is a Version 6 data file and the transaction data are from a Version 7 source.

Suppose you have a Version 6 data file, LIB6.BIRTHDAY, that contains employee ID numbers, last names, and birthdays. You want to update this data file with data described by VLIB.EMPS, a view descriptor based on the EMPLOYEE DDM. To perform the update, enter the following SAS statements.

proc sort data=lib6.birthday;
   by lastname;
run;

proc print data=lib6.birthday;
   title "LIB6.BIRTHDAY Data File";
   format birthdat date7.;
run;

proc print data=vlib.emps;
   title "Data Described by VLIB.EMPS";
run;

data mydata.newbday;
   update lib6.birthday vlib.emps;
   by lastname;
run;

proc print;
   title 'MYDATA.NEWBDAY Data File';
run;

In this example, the new, updated SAS data file, MYDATA.NEWBDAY, is a Version 7 data file. It is stored in the Version 7 SAS data library associated with the libref MYDATA.

When the UPDATE statement references the view descriptor VLIB.EMPS and uses a BY statement in the DATA step, the BY statement causes a BY clause to be generated for the variable LASTNAME. (Note that a BY statement must reference an ADABAS descriptor data field.) Thus, the BY clause causes the ADABAS data to be presented to the SAS System in a sorted order for use in updating the MYDATA.NEWBDAY data file. However, the data file LIB6.BIRTHDAY had to be sorted before the update, because the UPDATE statement expects both the original file and the transaction file to be sorted by the BY variable.

Data in the Data File to Be Updated, LIB6.BIRTHDAY, Data Described by the View Descriptor VLIB.EMPS, and Data in the Updated Data File MYDATA. NEWBDAY show the results of PRINT procedures on the original data file, the transaction data, and the updated data file.

Data in the Data File to Be Updated, LIB6.BIRTHDAY

LIB6.BIRTHDAY Data File OBS EMPID BIRTHDAT LASTNAME 1 129540 31JUL60 CHOULAI 2 356134 25OCT60 DUNNETT 3 127845 25DEC43 MEDER 4 677890 24APR65 NISHIMATSU-LYNCH 5 459287 05JAN34 RODRIGUES 6 346917 15MAR50 SHIEKELESLAN 7 254896 06APR49 TAYLOR-HUNYADI

Data Described by the View Descriptor VLIB.EMPS

Data Described by VLIB.EMPS OBS EMPID JOBCODE BIRTHDAT LASTNAME 1 456910 602 24SEP53 ARDIS 2 237642 602 13MAR54 BATTERSBY 3 239185 602 28AUG59 DOS REMEDIOS 4 321783 602 03JUN35 GONZALES 5 120591 602 12FEB46 HAMMERSTEIN 6 135673 602 21MAR61 HEMESLY 7 456921 602 12MAY62 KRAUSE 8 457232 602 15OCT63 LOVELL 9 423286 602 31OCT64 MIFUNE 10 216382 602 24JUL63 PURINTON 11 234967 602 21DEC67 SMITH 12 212916 602 29MAY28 WACHBERGER 13 119012 602 05JAN46 WOLF-PROVENZA

Data in the Updated Data File MYDATA. NEWBDAY

MYDATA.NEWBDAY Data File OBS EMPID BIRTHDAT LASTNAME JOBCODE 1 456910 24SEP53 ARDIS 602 2 237642 13MAR54 BATTERSBY 602 3 129540 31JUL60 CHOULAI . 4 239185 28AUG59 DOS REMEDIOS 602 5 356134 25OCT60 DUNNETT . 6 321783 03JUN35 GONZALES 602 7 120591 12FEB46 HAMMERSTEIN 602 8 135673 21MAR61 HEMESLY 602 9 456921 12MAY62 KRAUSE 602 10 457232 15OCT63 LOVELL 602 11 127845 25DEC43 MEDER . 12 423286 31OCT64 MIFUNE 602 13 677890 24APR65 NISHIMATSU-LYNCH . 14 216382 24JUL63 PURINTON 602 15 459287 05JAN34 RODRIGUES . 16 346917 15MAR50 SHIEKELESLAN . 17 234967 21DEC67 SMITH 602 18 254896 06APR49 TAYLOR-HUNYADI . 19 212916 29MAY28 WACHBERGER 602 20 119012 05JAN46 WOLF-PROVENZA 602

For more information about the UPDATE statement, see SAS Language Reference: Dictionary.

Note: You cannot update ADABAS data directly using the DATA step, but you can update ADABAS data using the following procedures: APPEND, FSEDIT, FSVIEW, and SQL. For more information about updating ADABAS data, see Browsing and Updating ADABAS Data. [cautionend]

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