Temporal data and the relational model a detailed investigation into the application of interval and relation theory to the problem of temporal database management /
Temporal database systems are systems that provide special support for storing, querying, and updating historical and/or future data. Current DBMSs provide essentially no temporal features at all, but this situation is likely to change soon for a variety of reasons; in fact, temporal databases are v...
| Κύριος συγγραφέας: | Date, C. J. |
|---|---|
| Άλλοι συγγραφείς: | Darwen, Hugh., Lorentzos, Nikos A. |
| Μορφή: | Ηλεκτρονική πηγή |
| Γλώσσα: | English |
| Στοιχεία έκδοσης: |
San Diego, CA :
Morgan Kaufmann Publishers,
c2003.
|
| Έκδοση: | 1st ed. |
| Θέματα: | |
| Διαθέσιμο Online: |
http://www.sciencedirect.com/science/book/9781558608559 |
| Ετικέτες: |
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Πίνακας περιεχομένων:
- A review of relational concepts
- An overview of Tutorial D
- Time and the database
- What is the problem?
- Intervals
- Operators on intervals
- The EXPAND and COLLAPSE operators
- The PACK and UNPACK operators
- Generalizing the relational operators
- Database design
- Integrity constraints 1 : candidate keys and related constraints
- Integrity constraints 2 : general constraints
- Database queries
- Database updates
- Stated times and logged times
- Point and interval types revisited.