Del records from flat files

Hi all,
I have a text file abc.txt, i want to delete records from a table take the input from the txt file from linux operating. lets see
My table table structure is
desc unix_logins
Name Null? Type
UNIX_LOGIN NOT NULL VARCHAR2(7)
NAME_LAST VARCHAR2(20)
NAME_FIRST VARCHAR2(20)
NAME_MI VARCHAR2(1)
LOGIN_CONTACT_TN VARCHAR2(12)
and abc.txt
UNIX_LOGIN
abc
bdf
fyz
rmt
lik
My Oracle is installed in Linux plat form. Can please suggest me how can do it.

>
I have a text file abc.txt, i want to delete records from a table take the input from the txt file from linux operating.
>
It's not clear what you mean. Do you want to delete records from a table if those records exist in a txt file?
You can create an EXTERNAL TABLE on the text file and then use that 'table' in a query that deletes records from your table.
DELETE FROM myTable where LAST_NAME in (SELECT NAME_LAST from myExternalTable); See this Oracle-base example of creating an external table on a text file
http://www.oracle-base.com/articles/9i/external-tables-9i.php

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                                e.      Specify the key fields of the DataSource.
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                                  f.      Specify whether lowercase is supported.
                                g.      Specify whether the source provides the data in the internal or external format.
                                h.      If you choose the external format, ensure that the output length of the field (external length) is correct. Change the entries, as required.
                                  i.      If required, specify a conversion routine that converts data from an external format into an internal format.
                                  j.      Select the fields that you want to be able to set selection criteria for when scheduling a data request using an InfoPackage. Data for this type of field is transferred in accordance with the selection criteria specified in the InfoPackage.
                                k.      Choose the selection options (such as EQ, BT) that you want to be available for selection in the InfoPackage.
                                  l.      Under Field Type, specify whether the data to be selected is language-dependent or time-dependent, as required.
           7.      Check, save and activate the DataSource.
           8.      Go to the Preview tab page.
    If you select Read Preview Data, the number of data records you specified in your field selection is displayed in a preview.
    This function allows you to check whether the data formats and data are correct.
    For More Info:  http://help.sap.com/saphelp_nw70/helpdata/EN/43/01ed2fe3811a77e10000000a422035/content.htm

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    Hi.......
    Infocube is always additive...........so there will be Duplicate records.........Only DSO has the overwritten option.......So for this u hav to go for DSO.........
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    Then first content of the cube will get deleted..........then cube will be loaded.........this will solve ur problem......
    Hope this helps.....
    Regards,
    Debjani.......

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