May 26, 1993 1990 Census of Population and Housing Summary Tape File 3C 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � Starting The Software � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Type GO at the DOS prompt and ENTER. Example: L:\>go 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � Using The CD-ROM � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Summary Tape File 3C is on two CD-ROMs. The first CD-ROM (CD90-3C-1) contains all geographic summaries except Urbanized Areas and their components. The second CD-ROM (CD90-3C-2) contains the Urbanized Areas. The 1990 Summary Tape File 3C software runs on personal computers with 640K RAM operating under MS-DOS 3.3 or higher. There are no special display requirements. The CD-ROM is in the ISO 9660 format which requires the use of Microsoft CD-ROM Extensions Version 2.0 or higher. The software displays some brief statistical definitions through the glossary function. Refer to Appendix B (\DOCUMENT\APPEND_B.ASC) of the technical documentation for the complete text. For direct access to the data files, one of the many software packages which recognize the dBASE III Plus (.DBF) format will be very useful. Users of other types of systems, such as the Apple Macintosh, have access to the files through support for ISO 9660 CD-ROMs. Please note that the retrieval software will only run in the MS-DOS environment. 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � Contents Of The CD-ROM � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� Volume in drive is CD90_3C_n DOCUMENT Directory for documentation files. These are ASCII text files which contain complete technical documentation for the data. See \DOCUMENT\HOWTOUSE.ASC for information on the contents of the files. GO.BAT Batch file to execute data retrieval software. STF3C.EXE Data retrieval software. STF3??US.DBF Statistical database files. There are 35 files numbered STF300US.DBF through STF334US.DBF >>Reference Files<< STF3STRU.DBF This file describes the structure of the first 67 fields in the statistical database file. These are the identification fields. TABLES.DBF This file describes the numeric data tables. DNAMES.DBF This file contains a list of Tribal Designated Statistical Areas. (CD90-3C-1 only) UNAMES.DBF This file contains a list of Urbanized Areas. (CD90-3C-2 only) MNAMES.DBF This file contains a list of MSA/CMSAs. (CD90-3C-1 only) RNAMES.DBF This file contains a list of American Indian Reservations. (CD90-3C-1 only) VNAMES.DBF This file contains a list of Alaska Native Villages. (CD90-3C-1 only) ANAMES.DBF This file contains a list of Tribal Jurisdiction Statistical Areas. (CD90-3C-1 only) >>Index Files<< STF3AMUS.NDX This is a dBASE III index file for STF300US.DBF. Key fields are SUMLEV + CNTY + COUSUBFP + PLACEFP. STF3ALUS.NDX This is a dBASE III index file for STF300US.DBF. Key fields are SUMLEV + left(ANPSADPI,1). This index is UNIQUE. TABLES.NDX This is a dBASE III index file for TABLES.DBF. Key fields are TABLE + FIELD. DNAMES.NDX This is a dBASE III index file for DNAMES.DBF. The key field is LEFT(ANPSADPI,1) UNAMES.NDX This is a dBASE III index file for UNAMES.DBF. The key field is LEFT(ANPSADPI,1) MNAMES.NDX This is a dBASE III index file for MNAMES.DBF. The key field is LEFT(ANPSADPI,1) RNAMES.NDX This is a dBASE III index file for RNAMES.DBF. The key field is LEFT(ANPSADPI,1) VNAMES.NDX This is a dBASE III index file for VNAMES.DBF. The key field is LEFT(ANPSADPI,1) ANAMES.NDX This is a dBASE III index file for ANAMES.DBF. The key field is LEFT(ANPSADPI,1) 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � Converting dBASE Files � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� '********************************************** '*** This is a Microsoft BASIC program that *** '*** converts a dBASE (.DBF) file to ASCII *** '*** (.TXT). *** '********************************************** CLS INPUT "Database file to convert -> ", InFile$ INPUT " Text file -> ", OuFile$ OPEN InFile$ FOR BINARY AS #1 OPEN OuFile$ FOR OUTPUT AS #2 TYPE HdrStru Filler AS STRING * 4 RecCount AS LONG HdrBytes AS INTEGER RecBytes AS INTEGER END TYPE DIM Hdr AS HdrStru GET #1, , Hdr SEEK #1, Hdr.HdrBytes + 1 RecCntr = 0 DO Rec$ = STRING$(Hdr.RecBytes, " ") GET #1, , Rec$ PRINT #2, MID$(Rec$, 2) RecCntr = RecCntr + 1 IF RecCntr = Hdr.RecCount THEN EXIT DO LOOP CLOSE #1, #2 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸