Discuss the problems that arise when organizations rely upon multiple computerized file systems to store data. Discuss the advantages and disadvantages in using a database management system to carry out the same functions.
What will be an ideal response?
For the first part the answer should cover broadly all the problems associated with file-based
systems, such as: data duplication, data inconsistency, problems with validation and security,
fragmentation of data.
For the second part, the focus is on a DBMS to support the same operations. Advantages include:
providing all the data structuring facilities, security mechanisms, integrity mechanisms, backup
and recovery facilities, minimal redundancy, data sharing, data independence. Disadvantages
include: cost, size, complexity.
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Which of the following is false?
a. Since BigInteger is not a primitive type, we can’t use the arithmetic, relational and equality operators with BigIntegers. b. BigInteger method compareTo compares the BigInteger number that calls the method to the method’s BigInteger argument, and returns -1 if the BigInteger that calls the method is less than the argument, 0 if they’re equal or 1 if the BigInteger that calls the method is greater than the argument. c. The value 1 can be implicitly converted to a BigInteger. d. BigInteger can represent integer values larger than what primitive type long can represent.
What grocery list results from the following sequence of ADT list operations?
``` aList = a new empty list aList.insert(1, "butter") aList.insert(1, "eggs") aList.insert(1, "milk") ```
____ programs are free of syntax errors and they run faster than interpreted programs (because they are already in machine executable form).
A. Validated B. Compiled C. Assembled D. Instantiated
In a fiber-optic cable, each strand, called an optical fiber, is as thin as a human hair.
Answer the following statement true (T) or false (F)