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Chapter 1.3, Problem 1.11CP

What is an algorithm?

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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'. (c) A student cannot add more than two courses at a time…
Consider the following relational schema. An employee can work in more than one department; the pct_time field of the Works relation shows the percentage of time that a given employee works in a given department.   Emp(eid: integer, ename: string, age: integer, salary: real)  Works(eid: integer, did: integer, pct_time: integer)  Dept(did: integer, budget: real, managerid: integer)      Write the following queries in SQL:   a. Print the name of each employee whose salary exceeds the budget of all of the departments that he or she works in. b. Find the enames of managers who manage only departments with budgets larger than $1 million, but at least one department with budget less than $5 million.

Chapter 1 Solutions

Starting Out with C++ from Control Structures to Objects, Student Value Edition plus MyProgrammingLab with Pearson eText -- Access Card Package (8th Edition)

Ch. 1.3 - What is an algorithm?Ch. 1.3 - Why were computer programming languages invented?Ch. 1.3 - Prob. 1.13CPCh. 1.3 - Prob. 1.14CPCh. 1.3 - Prob. 1.15CPCh. 1.3 - Prob. 1.16CPCh. 1.3 - Prob. 1.17CPCh. 1.5 - Prob. 1.18CPCh. 1.5 - Prob. 1.19CPCh. 1.5 - Describe the difference between a program line and...Ch. 1.5 - Prob. 1.21CPCh. 1.5 - What happens to a variables current contents when...Ch. 1.5 - What must take place in a program before a...Ch. 1.5 - Prob. 1.24CPCh. 1.7 - What four items should you identify when defining...Ch. 1.7 - Prob. 1.26CPCh. 1.7 - What is a hierarchy chart?Ch. 1.7 - Prob. 1.28CPCh. 1.7 - Describe what a compiler does with a programs...Ch. 1.7 - Prob. 1.30CPCh. 1.7 - Is a syntax error (such as misspelling a key word)...Ch. 1.7 - What is the purpose of testing a program with...Ch. 1.7 - Briefly describe the difference between procedural...Ch. 1 - Prob. 1RQECh. 1 - What is the difference between system software and...Ch. 1 - Prob. 3RQECh. 1 - Why must programs written in a high-level language...Ch. 1 - Why is it easier to write a program in a...Ch. 1 - Prob. 6RQECh. 1 - Prob. 7RQECh. 1 - Prob. 8RQECh. 1 - The job of the ________ is to fetch instructions,...Ch. 1 - Internally, the CPU consists of the _______ and...Ch. 1 - Prob. 11RQECh. 1 - The two general categories of software are...Ch. 1 - A program is a set of _______.Ch. 1 - Prob. 14RQECh. 1 - _______ is the only language computers really...Ch. 1 - __________ languages are close to the level of...Ch. 1 - ________ languages are close to the level of the...Ch. 1 - Prob. 18RQECh. 1 - Words that have special meaning in a programming...Ch. 1 - Prob. 20RQECh. 1 - Prob. 21RQECh. 1 - __________ characters or symbols mark thebeginning...Ch. 1 - Prob. 23RQECh. 1 - Prob. 24RQECh. 1 - Prob. 25RQECh. 1 - Prob. 26RQECh. 1 - __________ is information a program gathers from...Ch. 1 - __________is information a program sends to the...Ch. 1 - Prob. 29RQECh. 1 - Available Credit The following steps should be...Ch. 1 - Sales Tax Design a hierarchy chart or flowchart...Ch. 1 - Account Balance Design a hierarchy chart or...Ch. 1 - The variable x starts with the value 0. The...Ch. 1 - The variable j starts with the value 10. The...Ch. 1 - The variable a starts with the value 1. The...Ch. 1 - Find the Error 36. The following pseudocode...

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