Question: What are the two types of time and how are
What are the two types of time, and how are they different? Why does it make sense to have both types of time associated with a tuple?
Answer to relevant QuestionsWill functional dependencies be preserved if a relation is converted to a temporal relation by adding a time attribute? How is the problem handled in a temporal database?Give a recursive procedure to efficiently compute the spatial join of two relations with R-tree indices. Give an example to show that the version-vector scheme does not ensure serializabilityExplain why it may be impractical to require serializability for long-duration transactions.Consider the data in Exercise 15-1. Use the normal approximation for the sign test to test H0: = 70 versus H0: 7.0. What is the P-value for this test?
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