Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Chapter 3, Problem 26E
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Query:
The query for the given scenario:
SELECT DISTINCT course_id, ID FROM takes GROUP BY ID, course_id HAVING COUNT (*) > 2 ORDER BY course_id;
Explanation:
- The “course_id” and “I...
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Scenario
You work for a small company that exports artisan chocolate. Although you measure your products in kilograms, you often get orders in both pounds and ounces. You have decided that rather than have to look up conversions all the time, you could use Python code to take inputs to make conversions between the different units of measurement.
You will write three blocks of code. The first will convert kilograms to pounds and ounces. The second will convert pounds to kilograms and ounces. The third will convert ounces to kilograms and pounds.
The conversions are as follows:
1 kilogram = 35.274 ounces
1 kilogram = 2.20462 pounds
1 pound = 0.453592 kilograms
1 pound = 16 ounces
1 ounce = 0.0283 kilograms
1 ounce = 0.0625 pounds
For the purposes of this activity the template for a function has been provided. You have not yet covered functions in the course, but they are a way of reusing code. Like a Python script, a function can have zero or more parameters. In the code window you…
make a screen capture showing the StegExpose results
Which of the following is not one of the recommended criteria for strategic objectives?
Multiple Choice
a) realistic
b) appropriate
c) sustainable
d) measurable
Chapter 3 Solutions
Database System Concepts
Ch. 3 - Prob. 1PECh. 3 - Prob. 2PECh. 3 - Prob. 3PECh. 3 -
Suppose that we have a relation marks(ID, score)...Ch. 3 - Suppose that we have a relation marks(ID, score)...Ch. 3 -
The SQL like operator is case sensitive (in most...Ch. 3 - Prob. 7PECh. 3 - Prob. 8PECh. 3 - Prob. 9PECh. 3 - Prob. 10PE
Ch. 3 - Prob. 11ECh. 3 - Prob. 12ECh. 3 - Prob. 13ECh. 3 -
Consider the insurance database of Figure 3.17,...Ch. 3 - Prob. 15ECh. 3 - Prob. 16ECh. 3 - Prob. 17ECh. 3 - Prob. 18ECh. 3 -
List two reasons why null values might be...Ch. 3 - Prob. 20ECh. 3 - Prob. 21ECh. 3 - Prob. 22ECh. 3 - Prob. 23ECh. 3 - Prob. 24ECh. 3 - Prob. 25ECh. 3 - Prob. 26ECh. 3 - Using the university schema, write an SQL query to...Ch. 3 - Prob. 28ECh. 3 - Prob. 29ECh. 3 - Prob. 30ECh. 3 - Prob. 31ECh. 3 - Prob. 32ECh. 3 - Prob. 33ECh. 3 - Prob. 34ECh. 3 - Prob. 35E
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- Management innovations such as total quality, benchmarking, and business process reengineering always lead to sustainable competitive advantage because everyone else is doing them. a) True b) Falsearrow_forwardVision statements are more specific than strategic objectives. a) True b) Falsearrow_forwardThe three components of the __________ approach to corporate accounting include financial, environmental, and social performance measures. Multiple Choice a) stakeholder b) triple dimension c) triple bottom line d) triple efficiencyarrow_forward
- Competitors, as internal stakeholders, should be included in the stakeholder management consideration of a company and in its mission statement. a) True b) Falsearrow_forwardAt what level in the organization should the strategic management perspective be emphasized? Multiple Choice a) throughout the organization b) from the bottom up in an organization c) at the top of the organization d) at the middle of the organizationarrow_forwardA good manager can be flexible when it comes to sticking to the original plan; to get good results, the intended strategy has to become the realized strategy. a) True b) Falsearrow_forward
- ________ tend to be quite enduring and seldom change. Multiple Choice a) Strategic objectives b) Vision statements c) Strategic plans d) Mission statementsarrow_forwardThe idea that organizations are not only accountable to stockholders but also to the community-at-large is known as social responsibility. a) True b) Falsearrow_forwardAmong the leaders needed for an effective strategic management process are ________, who, although they have little positional power and formal authority, generate their power through the conviction and clarity of their ideas. Multiple Choice a) executive leaders b) triple bottom line advocates c) internal networkers d) local line leadersarrow_forward
- I would like to get help to resolve the following casearrow_forwardLast Chance Securities The IT director opened the department staff meeting today by saying, "I've got some good news and some bad news. The good news is that management approved the payroll system project this morning. The new system will reduce clerical time and errors, improve morale in the payroll department, and avoid possible fines and penalties for noncompliance. The bad news is that the system must be installed by January 1st in order to meet new federal reporting rules, all expenses from now on must be approved in advance, the system should have a modular design if possible, and the vice president of finance would like to announce the new system in a year-end report if it is ready by mid-December." Tasks 1. Why is it important to define the project scope? How would you define the scope of the payroll project in this case? 2. Review each constraint and identify its characteristics: present versus future, internal versus exter- nal, and mandatory versus desirable. 3. What…arrow_forward2. Signed Integers Unsigned binary numbers work for natural numbers, but many calculations use negative numbers as well. To deal with this, a number of different methods have been used to represent signed numbers, but we will focus on two's complement, as it is the standard solution for representing signed integers. 2.1 Two's complement • Most significant bit has a negative value, all others are positive. So, the value of an n-digit -2 two's complement number can be written as: Σ2 2¹ di 2n-1 dn • Otherwise exactly the same as unsigned integers. i=0 - • A neat trick for flipping the sign of a two's complement number: flip all the bits (0 becomes 1, or 1 becomes 0) and then add 1 to the least significant bit. • Addition is exactly the same as with an unsigned number. 2.2 Exercises For questions 1-3, answer each one for the case of a two's complement number and an unsigned number, indicating if it cannot be answered with a specific representation. 1. (15 pts) What is the largest integer…arrow_forward
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