Which relationship matches one record from a table to many records from another table? A. One to many B. Many to many C. Many to one D. One to one
Answer: Option A - One to Many
Explanation: The relationship in which one record present in one table is matched with many records present another table, is called One-to-many relationship. In this case, the attributes (many) in the second table are each linked to only one attribute of the first table.
Which relationship matches one record from a table to many records from another table? A. One to many B. Many to many C. Many to one D. One to one
Which relationship matches one record from a table to many records from another table? A. One to many B. Many to many C. Many to one D. One to one
Suppose R is a one-to-one relationship from R1 = { a, b, c, d; to R2 = {e, f, g, h} of the following sets, which one is NOT a valid instance of R? (2 points) Select one: f), the empty set. {(cg)} {(a, e) (b,f).(b,9)} {(ah), (b, g),c, f), (d, e)} All of the above None of the above.
Suppose R is a one-to-one relationship from R1 = { a, b, c, d} to R2 = {e, f, g, h}. Of the following sets, which one is NOT a valid instance of R? (2 points) Select one: ะพ 1, the empty set O {(c, g)} {(a, e),(6,1),(6,9)} {(a,h), (0.9), (C, f), (d, e)}. All of the above. None of the above.
Which compound matches the IR spectrum? A B C D E F
Which compound matches the IR spectrum? A B c D E F
If there is a one-to-many relationship between two entities, S (on the "one side" of the relationship) and T (on the "many side" of the relationship), and the delete rule between the two relations that represent them in a relational database is restrict, deleting a record in relation T might be allowed might not be allowed will always be allowed a. b. will never be allowed d. a and b e.
Three friends (A, B, and C) will participate in a round-robin tournament in which each one plays both of the others. Suppose that P(A beats B) = 0.2 P(A beats C) = 0.6 P(B beats C) = 0.8 and that the outcomes of the three matches are independent of one another. (a) What is the probability that A wins both her matches and that B beats C? (b) What is the probability that A wins both her matches? (c) What...
Three friends (A, B, and C) will participate in a round-robin tournament in which each one plays both of the others. Suppose that P(A beats B) = 0.8 P(A beats C) = 0.6 P(B beats C) = 0.4 and that the outcomes of the three matches are independent of one another. (a) What is the probability that A wins both her matches and that B beats C? (b) What is the probability that A wins both her matches? (C) What...
Three friends (A, B, and C) will participate in a round-robin tournament in which each one plays both of the others. Suppose that P(A beats B) = 0.2 P(A beats C) = 0.6 P(B beats C) = 0.4 and that the outcomes of the three matches are independent of one another. (a) What is the probability that A wins both her matches and that B beats C? (b) What is the probability that A wins both her matches? (c) What...
Which compound matches the IR spectrum best? A, B, C, D, E or F? Please give explanation too!!