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Calculating checksum in datawarehousing

Checksum is a calculated value that is used to determine the integrity of data. Checksum serves as a unique identifier for the data (a file, a text string, or a table row). If the data changes then so does the checksum value. This makes it easy to verify the integrity of the data.

Checksum is very useful in data warehousing especially when working with very wide slow changing dimensions. It takes less processing power to compare one checksum field than to compare all fields within dimension.

dbSL ETL software can calculate check sum for entire file, string or row of data. it supports following algorithms CRC16, CRC24, CRC32, Adler32, CRC64, eDonkey, eMule, MD4, MD5, RIPEMD160, SHA1, SHA224, SHA256, SHA384, SHA512,Whirlpool. It can return the data in HEX or BASE64 format.

Calculating checksum

"The DBSL Integration solution eliminated our data access bottle neck that previously impeded company growth. We are now able to provide solutions to long standing problems areas such as automated order processing and business reporting limitations. Additionally the solution allows for new opportunities to simply hook-on to our existing data sources. From development through testing the DBSL support  team continues to be helpful, resourceful and responsive to our company needs."

John Kil,
IT Manager

Our customers






Australian Rugby Union
Databases we work with