Reference no: EM13182674
1 : When would you choose to implement distributed databases, rather than local databases? Would you go for this design if all your computers were localized in one building? What if they are spread out in your country? What would you recommend when they are spread worldwide? When would you mirror databases and when would you use databases tailored for the local environment?
2 : Design a hashed file of words that could be used as a spell checker. What would you use as a hash function? Would your choice of a hash function depend on the language from which the words are chosen? Why should such a file not be stored as a sequential file?
3 : Based on Chapter Review Problems from the book.
#1. What is meant by data independence? Explain your answer.
#2. Identify two benefits of separating application software from the database management system.
#3. Design a relational database containing information about music composers, their lives, and their compositions. (Avoid redundancies similar to those in Figure 9.4)
#4. Suppose a sequential file contains 50,000 records, and 5 milliseconds are required to interrogate an entry. How long should we expect to wait when retrieving a record from the middle of the file?
#5. The chapter drew parallels between a traditional file index and the file directory system maintained by an operating system. In what ways does an operating system’s file directory differ from a traditional index?
|
Evaluate labor rate variance and labor efficiency variance
: Compute the materials price variance and the materials quantity variance and compute the labor rate variance and the labor efficiency variance.
|
|
Find the partial pressure of each produce
: Find the partial pressure of each produce and the total pressure in the flask at the end of the reaction.
|
|
Would the worker continue to be a member of the labor
: Assuming that U =0.5, would an hour spent in the labor force searching for a job make the husband better off or worse off? Would the worker continue to be a member of the labor force under these conditions? If not, how would he be ca..
|
|
Find unknowns in big chucks abbreviated cash budget
: Find the unknowns in Big Chucks abbreviated cash budget and determine the outstanding loan balance as of September 30, after any repayments have been made.
|
|
Design a hashed file of words
: Design a hashed file of words that could be used as a spell checker. What would you use as a hash function? Would your choice of a hash function depend on the language from which the words are chosen? Why should such a file not be stored as a sequent..
|
|
At what level of output would the firm produce
: Use the following information to calculate total revenue, marginal revenue, and marginal cost. Indicate the profit-maximizing level of output. If the price was $3 and fixed costs were $5, what would variable cost be? At what level of output would ..
|
|
Determine the number of units of product k
: Determine the number of units of product K to be manufactured in May and compute the May cash outlay for purchases of raw material A.
|
|
Compute the expected balance in accounts receivable
: Prepare a schedule of cash collections for May through July and compute the expected balance in Accounts Receivable as of July 31.
|
|
How many workers should the firm hire each hour
: A firm faces a perfectly elastic demand for its output at a price of $6 per unit of output and each hour of labor produces five units of output. For L number of workers hired each hour and w hourly wage rate, the firm faces an upward- sloped labor..
|