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Chapter 5
Data Unload Utility: dbdump
5.1 INTRODUCTION
This chapter describes the c-treeSQL database dump utility, dbdump.
dbdump writes the data in a database to a file. The format of the exported data is specified by
the record description given in an input command file to dbdump.
Both dbload and dbdump commands files use DEFINE RECORD statements with similar syn-
tax to specify the format of loaded or exported data records. The commands file specifies the
data file, the format of data records, and the destination (or source) database columns and
tables for the data.
The following figure shows the dbdump execution process.
Figure 5-1: dbdump Execution Process
5.2 PREREQUISITES FOR DBDUMP
Before running dbdump, you need:
• A valid, readable commands file
dbdump
Data fi
le
Commands file
c-tree Plus
Database
c-treeSQL Engine