EBK USING MIS
10th Edition
ISBN: 9780134658919
Author: KROENKE
Publisher: YUZU
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Expert Solution & Answer
Chapter 12, Problem 12.4UYK
Explanation of Solution
Compare and Contrast the use of SDLC and Scrum processes to use in a project:
| SDLC | SCRUM |
| Software Development Life Cycle or SDLC is a sequential model and is east to implement. | Customer satisfaction is more in Scrum as it optimises turnaround time and is responsive to requests. |
| SDLC is more rigidly planned and each process can proceed in a fairly structured way where output from one phase is passed as input to the other phases. | Compared to SDLC, in Scrum project is processed incrementally where small parts of the project are selected and are completed in a work circle which will continue till it is out of time or money. |
| SDLC is comfortable with structured activity... |
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Consider the following database for some store:
Customers (cid, cname, city, discount)Agents (aid, aname, city, percent)Products (pid, pname, city, quantity, price)Orders (ordno, mon, cid, aid, pid, qty, dollars)
The relation Customers records the ID (cid), name (cname), location (city) of each customer and a discount percentage (discount) for this customer.
The relation Agents records the ID (aid), name (aname), location (city) of each agent and a transaction fee (percent) charged by this agent.
The relation Products lists the ID (pid), name (pname), location (city), quantity and price of available products.
And finally, the relation Orders contains a unique order number (ordno), the month (mon), customer (cid), agent (aid), product (pid), quantity (qty) of each order as well as the total value (dollars) of the transaction.
1. Express the following query in SQL
(a) List customers (names) who do not have discounts but purchased at least one product of price greater than $50.
(b) Find…
Consider the following relational schema and briefly answer the questions that follow:
Emp(eid: integer, ename: string, age: integer, salary: real)
Works(eid: integer, did: integer, pct_time: integer)
Dept(did: integer, budget: real, managerid: integer)
a. Define a table constraint on Dept that will ensure that all managers have age > 30.
b. Write SQL statements to delete all information about employees whose salaries exceed that of the manager of one or more departments that they work in. Be sure to ensure that all the relevant integrity constraints are satisfied after your updates.
Consider the following relations:
Student(snum: integer, sname: string, rmajor: string,
level: string, age: integer)
Class(cname: string, meets_at: time, room: string, fid: integer)
Enrolled(snum: integer, cname: string)
Faculty(fid: integer, fname: string, deptid: integer)
The meaning of these relations is straightforward; for example, Enrolled has one record per student-class pair such that the student is enrolled in the class.
2. Express each of the following integrity constraints in SQL unless it is implied by the primary and foreign key constraint; if so, explain how it is implied. If the constraint cannot be expressed in SQL, say so. For each constraint, state what operations (inserts, deletes, and updates on specific relations) must be monitored to enforce the constraint.
(a) Every faculty member must teach at least two courses.
(b) Every student must be enrolled in the course called 'Math101'.
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Chapter 12 Solutions
EBK USING MIS
Ch. 12.4 - Prob. 1EGDQCh. 12.4 - Prob. 2EGDQCh. 12.4 - Prob. 3EGDQCh. 12.4 - Prob. 4EGDQCh. 12.4 - Prob. 6EGDQCh. 12.4 - Prob. 7EGDQCh. 12.4 - Prob. 8EGDQCh. 12.4 - Prob. 9EGDQCh. 12.4 - Prob. 10EGDQCh. 12.6 - Sports are one area in which the collection and...
Ch. 12.6 - Prob. 2BOIQCh. 12.6 - Prob. 3BOIQCh. 12.6 - Prob. 4BOIQCh. 12.7 - Prob. 1SGDQCh. 12.7 - Prob. 2SGDQCh. 12.7 - Prob. 3SGDQCh. 12.7 - Prob. 4SGDQCh. 12.7 - Prob. 5SGDQCh. 12.7 - Prob. 6SGDQCh. 12.7 - Prob. 7SGDQCh. 12.7 - Prob. 1CGDQCh. 12.7 - Prob. 2CGDQCh. 12.7 - Prob. 3CGDQCh. 12.7 - Prob. 4CGDQCh. 12.7 - Prob. 5CGDQCh. 12.7 - Prob. 12.1ARQCh. 12.7 - Prob. 12.2ARQCh. 12.7 - Prob. 12.3ARQCh. 12.7 - What are the phases in the systems development...Ch. 12.7 - What are the keys for successful SDLC projects?...Ch. 12.7 - How can scrum overcome the problems of the SDLC?...Ch. 12.7 - Prob. 12.7ARQCh. 12 - Prob. 12.1UYKCh. 12 - Prob. 12.4UYKCh. 12 - Prob. 12.5UYKCh. 12 - Prob. 12.6CE12Ch. 12 - Prob. 12.7CE12Ch. 12 - Prob. 12.8CE12Ch. 12 - Prob. 12.9CE12Ch. 12 - Describe three reasons why cases like this will...Ch. 12 - Prob. 12.11CS12Ch. 12 - Prob. 12.12CS12Ch. 12 - The project was known to be in trouble, but it...Ch. 12 - Prob. 12.14CS12
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