How to read dbf file in oracle

Oracle can read dbf files through the following steps: create an external table and reference the dbf file; query the external table and retrieve data; import the data into the Oracle table.

How to read dbf files using Oracle

A dbf file is a file format used in dBase databases. Oracle Database can read dbf files and import them as tables.

Steps:

1. Create external table

   To read the dbf file, you need to create a external table. An external table is a virtual table that references an external data source (in this case, a dbf file). The following SQL statement will create an external table named dbf_table that references a dbf file named myfile.dbf:

   <code class="sql">CREATE TABLE dbf_table
   EXTERNAL (
     TYPE ORACLE_LOADER
     DEFAULT DIRECTORY my_data_dir
     ACCESS PARAMETERS
     (
       RECORDS DELIMITED BY '\n'
       FIELDS TERMINATED BY ','
     )
     LOCATION (myfile.dbf)
   )
   REJECT LIMIT UNLIMITED;</code>

2. Querying external tables

   After creating an external table, you can query it like a normal table. For example, the following SQL statement will select all rows from the dbf_table external table:

   <code class="sql">SELECT * FROM dbf_table;</code>

3. Import data into Oracle table

   You can also import data in the dbf file into the Oracle table. The following SQL statement imports data from the dbf_table external table into an Oracle table named oracle_table:

   <code class="sql">INSERT INTO oracle_table
   SELECT * FROM dbf_table;</code>

Tip:

• DIRECTORY parameter Specifies the directory where the dbf file is located.
• ACCESS PARAMETERS section specifies the read settings for the dbf file.
• REJECT LIMIT The parameter controls the number of rows that will be rejected.

By following these steps, you can easily read dbf files and manage their data using Oracle.

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