Database management systems notes
From Files to a Database
The six problems that make file storage collapse, and what a DBMS does about each. Every section is a drawn page beside a clear written explanation, about 18 minutes in all.
- Chapter 1 of 34
- About 18 minutes
- 8 sections
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In this chapter
- The file-processing system
- Problem 1 and 2: redundancy and inconsistency
- Problem 3: every new question needs a new program
- Problem 4 and 5: integrity and atomicity
- Problem 6: many users at once (and who may see what)
- What a DBMS provides in return
- When a database is the wrong answer
- The people involved, and a short history
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