Rdb: Ruby-Nachbau der MWC /rdb-Werkzeuge

man/schema.man

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+.TH schema "" "" "/rdb Command"
+.PC "Print a table's schema"
+\fBschema \fItableorlist ...\fR
+.PP
+.II "table^print schema"
+.II "data base^print schema"
+The command
+.B schema
+prints the schema, or a data-base dictionary, for each
+.IR tableorlist .
+.PP
+Other data-base systems require that you define a schema
+prior to creating a table.
+In
+.BR /rdb ,
+you can derive a schema from an existing table or tables.
+.SH Example
+The following command combines the schemas for tables
+.B inventory
+and
+.BR maillist .
+The example pipes the concatenated schema through the command
+.B justify
+to ``pretty up'' the output:
+.DM
+	schema inventory maillist | justify
+.DE
+.PP
+This produces the following:
+.DM
+Table           Field   Name
+---------       -----   -----------  
+inventory       1       Item         
+inventory       2       Amount       
+inventory       3       Cost         
+inventory       4       Value        
+inventory       5       Description  
+maillist        1       Number       
+maillist        2       Name         
+maillist        3       Company      
+maillist        4       Street       
+maillist        5       City         
+maillist        6       State        
+maillist        7       ZIP          
+maillist        8       Phone        
+.DE
+.PP
+Because
+.B schema
+is a shell script, you can modify it to give widths of columns,
+data types, and so on.
+.SH "See Also"
+.B
+datatype,
+precision,
+width
+.R
+.SO schema