Documentation: Census 1990
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Publisher: U.S. Census Bureau
Survey: Census 1990
Document: Summary Tape File 1
citation:
Social Explorer, U.S. Census Bureau; Census of Population and Housing, 1990: Summary Tape File 1 on CD-ROM [machine-readable data files] / prepared by the Bureau of the Census. Washington: The Bureau [producer and distributor], 1991.
Summary Tape File 1
Appendix H. Record Layout of Data Dictionary
Introduction
This appendix provides the record layout for the machine-readable data dictionary file that accompanies each data tape. This data dictionary was developed as a generic dictionary that, with some programming, could be converted for use with specific software packages.

Geographic Description
GEOGRAPHIC RECORD 1-FIELD MNEMONIC, SIZE, AND TYPE
POSITION DESCRIPTION
1-2 Identifier "G1 " (Geographic Record 1)
3 Blank
4-11 Field mnemonic (left justified)
12 Blank
13-14 Field size (right justified)
15 Blank
16-18 Data type (left justified)Note: Legal entries are A, N, and A/N
19 Blank
20-24 Begin position (right justified)(Begin position in relation to the entire record)
25 Blank
26-30 Relative begin position (right justified)(Begin position in relation to the record segment)
31 Blank
32 Number of implied decimals
33-80 Blank
GEOGRAPHIC RECORD 2 FIELD DESCRIPTION
POSITION DESCRIPTION
1-2 Identifier"G2" (Geographic Record 2)
3 Blank
4-8 Begin position (right justified) (repeat from 20-24 above)
9 Blank
10-80 Field Description (left justified)
GEOGRAPHIC RECORD 3 CODE IDENTIFICATION
POSITION DESCRIPTION
1-2 Identifier"G3" (Geographic Record 3)
3 Blank
4-8 Begin position (right justified) (repeat from 20-24 in G1)
9 Blank
10-17 Codes (right justified)
18 Blank
19-80 Code identification (left justified)
GEOGRAPHIC DESCRIPTION EXAMPLES [1]
Examples of the geographic records are shown below. In example 1, there are no G3 records. G3 records will appear only for fields which have code listings in the technical documentation.
EXAMPLE 1
G1 FILEID 8 A/N 1 1 0
G2 1 File Identification
EXAMPLE 2
G1 PSADC 2 A/N 289 289 0
G2 289 Political/Statistical Area Description Code
G3 289 01 State or State equivalent - no status is appended to the name
G3 289 01 of the entity in census publications and related data products
G3 289 04 Borough - county equivalent in Alaska. "Borough" is appended t
G3 289 04 o the name of the entity in census publications and related da
G3 289 04 ta products
G3 289 05 Census area - county equivalent in Alaska; "Census Area" is ap
G3 289 05 pended to the name of the entity in census publications and re
G3 289 05 lated data products
[1] Examples are for illustrative purposes and are not specific to this STF.
TABLE (MATRIX) DESCRIPTION
TABLE RECORD 1 TABLE NUMBER AND CHARACTERISTICS
POSITION DESCRIPTION
1-2 Identifier"T1" (Table Record 1)
3 Blank
4-9 Table (matrix) number (left justified)
10 Blank
11-15 Begin position (right justified)(Begin position in relation to the entire record)
16 Blank
17-21 Relative begin position (right justified)(Begin position in relation to the record segment)
22 Blank
23-24 Cell size for this table (matrix) (right justified)
25 Blank
26 Number of implied decimals for cells in this table (matrix)
27 Blank
28-30 Number of cells in this table (matrix) (right justified)
31 Blank
32-34 Number of variables (right justified)
35-80 Blank
TABLE RECORD 2 TABLE TITLE
POSITION DESCRIPTION
1-2 Identifier"T2" (Table Record 2)
3 Blank
4-9 Table (matrix) number (left justified)
10 Blank
11-80 Table (matrix) title (left justified)
TABLE RECORD 3 UNIVERSE DESCRIPTION
POSITION DESCRIPTION
1-2 Identifier "T3" (Table Record 3)
3 Blank
4-9 Table (matrix) number (left justified)
10 Blank
11-80 Universe Description (left justified)
TABLE RECORD 4-N TABLE VARIABLE DESCRIPTIONS
POSITION DESCRIPTION
1-2 Identifier "Tn" n = sequence number of variable in the table being described.
3 Blank
4-9 Table (matrix) number (left justified)
10 Blank
11-76 Variable name (left justified)
77 Blank
78-80 Number of categories for this variable (right justified)
Note: Subsequent "T" records with the same "n" will have the variable categories described in positions 11-80.
FILLER RECORD  
POSITION DESCRIPTION
1-2 Identifier "F1" (Filler Record)
3 Blank
4-7 "FILL"
8-10 Blank
11-15 Begin Position (right justified) (Begin position in relation to the entire record)
16 Blank
17-21 Relative Begin Position (right justified) (Begin position in relation to the record segment)
22 Blank
23-26 Total number of "FILL" blanks
27-80 Blank
MATRIX EXAMPLE [1]  
See example 3 below.  
EXAMPLE 3  
Sex (2) by Marital Status(5) [10]  
T1 P14 4423 4423 9 0 10 2  
T2 P14 SEX BY MARITAL STATUS  
T3 P14 Persons 15 years and over  
T4 P14 SEX 2
T4 P14 Male  
T4 P14 Female  
T5 P14 MARITAL STATUS 5
T5 P14 Never married  
T5 P14 Now married, except separated  
T5 P14 Separated  
T5 P14 Widowed  
T5 P14 Divorced  
[1] Examples are for illustrative purposes and are not specific to this STF.