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Top Forums UNIX for Dummies Questions & Answers Importing a unix file dump into a PC capable database Post 24978 by DaltonF on Tuesday 23rd of July 2002 04:01:23 AM
Old 07-23-2002
Importing a unix file dump into a PC capable database

My development team has been trying to figure out how to import a unix data dump into SQL Server or convert it into an intermediate file format for several days.

The data dump in question looks like this:
$RecordID: 1<eof>
$Version: 1<eof>
Category: 1<eof>
Poster: John Doe<eof>
ProductName: Test Product<eof>
SKU: 10045689<eof>
Line1: Test Product Line 1 Description<eof>
Line2: Test Product Line 2 Description<eof>
Comments: Test Product Comments<eof>
<eor>

There are nearly 100,000 of records that have nearly 4,000 fields that vary based on the product's category. The field order varies per record within each category. When data does not exist for a given field, the field/value pair is simply excluded for the dump.

We were going to write a parsing application that converted this dump to XML, read it into a dataset, and then uploaded the dataset. About half way through that development, however, I realized that the parsing program would require a minimum of eight gigabytes to run. That obviously won't work.
(100,000 records X 4,000 fields = 400,000,000 fields) X 20 bytes per field name = 8,000,000,000 or 8 billion bytes

Do you know anyone that could tell us an easier way to import this unix dump into SQL? I'm sure there is a standard way of dealing with these dumps, but no one on our team has any experience with unix.

Any help or referral would be GREATLY APPRECIATED. This problem is holding up our entire development process.

Sincerely,

Dalton D. Franklin, MCP
Chief Executive Officer
Simplicity Technology
http://www.simplicitycorp.net
daltonf@simplicitycorp.net
615-327-9797 Telephone
615-985-0060 Fax
 

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UALARM(3)						   BSD Library Functions Manual 						 UALARM(3)

NAME
ualarm -- schedule signal after specified time LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <unistd.h> useconds_t ualarm(useconds_t useconds, useconds_t interval); DESCRIPTION
This is a simplified interface to setitimer(2). The ualarm() function waits a count of useconds before asserting the terminating signal SIGALRM. System activity or time used in processing the call may cause a slight delay. If the interval argument is non-zero, the SIGALRM signal will be sent to the process every interval microseconds after the timer expires (e.g., after useconds number of microseconds have passed). Due to a setitimer(2) restriction, the maximum number of useconds and interval is limited to 100,000,000,000,000 (in case this value fits in the unsigned integer). RETURN VALUES
When the signal has successfully been caught, ualarm() returns the amount of time left on the clock. NOTES
A microsecond is 0.000001 seconds. SEE ALSO
getitimer(2), setitimer(2), sigpause(2), sigvec(2), alarm(3), signal(3), sleep(3), usleep(3) HISTORY
The ualarm() function appeared in 4.3BSD. BSD
April 19, 1994 BSD
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