Some problems concerning keys for relation schemes and relations in the relational datamodel
โ Scribed by Janos Demetrovics; Vu Duc Thi
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 460 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0020-0190
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
We obtain matching upper and lower bounds for the amount of time to find the predecessor of a given element among the elements of a fixed compactly stored set. Our algorithms are for the unit-cost word RAM with multiplication and are extended to give dynamic algorithms. The lower bounds are proved f
## Strong fractionation of deuterium in photolysis of H 2 O and above the hygropause reduces the production of HD relative to H 2 on Mars by a factor of 3.7 total. The model by Y. L. Yung et al. (1988, Icarus 76, 146-159) for deuterium fractionation in chemical reactions on Mars corrected for this