The Caption property keeps track of the order of the values in an indexed field.
Answer the following statement true (T) or false (F)
False
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Consider the real-world transaction for dispensing cash discussed in Section 19.3.5. For each of the critical times—before, during, and after the execution of the real- world transaction—in which the system might crash, describe how the system (after it recovers from the crash) determines whether or not the cash has been dispensed. Discuss some ways in which the cash-dispensing mechanism itself might fail in such a way that the system cannot tell whether or not the cash has been dispensed.
What will be an ideal response?
________ was originally created with a 7-bit system using 128 characters, but was later upgraded to an 8-bit system
A) Unicode B) ASCII C) BCD D) EBCDIC
Prove that relational algebra queries are domain-independent. Hint: Use induction on the structure of the relational algebra expression.
What will be an ideal response?
Process modeling involves graphically representing the functions, or processes, which capture, manipulate, store, and distribute data between a system and its environment and between components of a system. A data flow diagram is a type of process model.
a. activity model b. productivity model c. data model d. data analysis technique