1.The one decision for a relational database that usually influences efficiency the most is index definition. What indexes do you recommend for this database? Justify your selection of each index. 2. List and define the factors that are important to successful implementation efforts. 3.What are the deliverables from coding, testing, and installation?

1.Explain the testing process for code. 2. What is the difference between system documentation and user documentation? 3. List and define the various methods of user training. 4. Describe the delivery methods many vendors employ for providing support. 5. List the steps in the maintenance process and contrast them with the phases of the systems

1.What are the different types of maintenance and how do they differ? 2. Describe the factors that influence the cost of maintenance. Are any factors more important? Why? What types of measurements must be taken to gain an understanding of the effectiveness of maintenance? Why is tracking mean time between failures an important measurement?

1.Describe the process for controlling maintenance requests. Should all requests be handled in the same way or are there situations when you should be able to circumvent the process? If so, when and why? 2. What is meant by configuration management? Why do you think organizations have adopted the approach of using a systems, librarian?

1.Consider the reasons implementations fail. For at least three of these reasons, explain why this happens, if there is one (or more) type of implementation likely to minimize the occurrence, and if there is one (or more) type of installation more likely to induce failure for this reason. 2. What is the purpose of electronic

Use move-ahead-k to encode each of the strings abcddcbamnopponm and abcdmnopabcdmnop twice, with k = 1 and k = 2. Wait-c-and-move. An element of A is moved to the front only after it has been matched c times to symbols from the input stream (not necessarily c consecutive times). Each element of A should have a counter associated with it, to count the number

Actually, there is something special about 10. We use base-10 numbers because we have ten fingers. There is also something special about the use of 2 as the basis for a number system. What is it? Given a decimal (base 10) or a ternary (base 3) number with k digits, a natural question is; how much information

How many bits does it take to express the information included in one trit? We now turn to a transmitter, a piece of hardware that can transmit data over a communications line (a channel). In practice, such a transmitter sends binary data (a modem is a good example). However, in order to obtain general results,

How does the number of groups increase when the group size increases from s bits to s + n bits? A more complex approach to image compression by Huffman coding is to create several complete sets of Huffman codes. If the group size is, e.g., eight bits, then several sets of 256 codes are generated. When a symbol S is to

The group 3 code for a run length of five black pels (0011) is also the prefix of the codes for run lengths of 61, 62, and 63 white pels. Explain this. The Group 3 code has no error correction, but many errors can be detected. Because of the nature of the Huffman code, even