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MDM for Customer Data: Optimizing Customer Centric Management of Your Business by Kelvin K. A. Looi

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7.6. Can Existing Client File Deliver? Five Tests

Some organizations, especially larger ones with enough IT staff to be able to afford to build systems, have created CIF systems. This is especially common in banks, and, to a lesser extent, in insurance companies. Some banks have built CIFs since the 1970s, using older mainframe and database technologies such as COBOL, VSAM (flat) files, IMS (hierarchical-based) databases, IDMS (network-based) databases, and the like. Newer ones, built in the late 1980s and 1990s, use newer relational DBMS.

From my experiences, most home-grown CIFs have out-grown their original purpose. When they were built using the criteria of the moment, many of these CIFs were very good and served their purposes well. But ...

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