Principles of Data Management

SUMMARY

This chapter has looked a number of different areas, all of which impact on data management or are areas that data management needs to be aware of and have policies in place to deal with.

The first area considered was the use of off-the-shelf application packages. We saw that these packages are often difficult to integrate into a federation of systems where data is to be shared and that the overall cost of using an application package may be more expensive than expected due to the cost of providing interfaces and tailoring.

We then considered distributed data and databases. We looked at the reasons that data may be distributed and we looked at Chris Date’s objectives for a distributed database management system. We then looked at techniques ...