First version of FORTRAN to have dynamic variables:

According to ANSI 1992, Fortran 90 is the version of FORTRAN which included dynamic variables. It contained dynamic arrays, records and even pointers.

Dynamic (or allocable) arrays initially have no associated storage, but may be allocated storage while the program executes. This allows programs to use exactly the memory they require and only for the time they require it...

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Chapter 2, Problem 11RQ

Chapter 2, Problem 13RQ

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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 2 Solutions

CONCEPTS OF PROGRAMMING LANG.-TEXT

Ch. 2 - In what year was Plankalkl designed? In what year...Ch. 2 - What two common data structures were included in...Ch. 2 - How were the pseudocodes of the early 1950s...Ch. 2 - Speedcoding was invented to overcome two...Ch. 2 - Prob. 5RQ Ch. 2 - Prob. 6RQ Ch. 2 - Prob. 7RQ Ch. 2 - Prob. 8RQ Ch. 2 - Prob. 9RQ Ch. 2 - Prob. 10RQ

Ch. 2 - Prob. 11RQ Ch. 2 - Prob. 12RQ Ch. 2 - Prob. 13RQ Ch. 2 - Prob. 14RQ Ch. 2 - Prob. 15RQ Ch. 2 - Prob. 16RQ Ch. 2 - Prob. 17RQ Ch. 2 - Prob. 18RQ Ch. 2 - Prob. 19RQ Ch. 2 - Prob. 20RQ Ch. 2 - Prob. 21RQ Ch. 2 - On what programming language was COBOL based?Ch. 2 - In what year did the COBOL design process begin?Ch. 2 - What data structure that appeared in COBOL...Ch. 2 - What organization was most responsible for the...Ch. 2 - Prob. 26RQ Ch. 2 - Prob. 27RQ Ch. 2 - Prob. 28RQ Ch. 2 - Prob. 29RQ Ch. 2 - Prob. 30RQ Ch. 2 - Prob. 31RQ Ch. 2 - Prob. 32RQ Ch. 2 - Prob. 33RQ Ch. 2 - Prob. 34RQ Ch. 2 - Prob. 35RQ Ch. 2 - Prob. 36RQ Ch. 2 - Prob. 37RQ Ch. 2 - Prob. 38RQ Ch. 2 - Prob. 39RQ Ch. 2 - What Ada construct provides support for abstract...Ch. 2 - What populates the Smalltalk world?Ch. 2 - Prob. 42RQ Ch. 2 - Prob. 43RQ Ch. 2 - From what language does Objective-C borrow its...Ch. 2 - Prob. 45RQ Ch. 2 - What do the Ada and COBOL languages have in...Ch. 2 - What was the first application for Java?Ch. 2 - Prob. 48RQ Ch. 2 - How does the typing system of PHP and JavaScript...Ch. 2 - Prob. 50RQ Ch. 2 - Prob. 51RQ Ch. 2 - Prob. 52RQ Ch. 2 - Prob. 53RQ Ch. 2 - Prob. 54RQ Ch. 2 - What data structure does Python use in place of...Ch. 2 - Prob. 56RQ Ch. 2 - What characteristic of Rubys arithmetic operators...Ch. 2 - Prob. 58RQ Ch. 2 - Prob. 59RQ Ch. 2 - Prob. 60RQ Ch. 2 - Prob. 61RQ Ch. 2 - Prob. 62RQ Ch. 2 - Prob. 63RQ Ch. 2 - Prob. 64RQ Ch. 2 - Prob. 65RQ Ch. 2 - Prob. 66RQ Ch. 2 - Prob. 1PS Ch. 2 - Prob. 2PS Ch. 2 - Prob. 3PS Ch. 2 - Prob. 4PS Ch. 2 - Prob. 5PS Ch. 2 - Prob. 6PS Ch. 2 - Prob. 7PS Ch. 2 - Prob. 8PS Ch. 2 - Prob. 9PS Ch. 2 - Prob. 10PS Ch. 2 - Prob. 11PS Ch. 2 - Prob. 12PS Ch. 2 - Prob. 13PS Ch. 2 - Prob. 14PS Ch. 2 - Prob. 15PS Ch. 2 - Prob. 16PS Ch. 2 - Prob. 17PS Ch. 2 - Prob. 18PS Ch. 2 - Prob. 19PS Ch. 2 - Prob. 20PS Ch. 2 - Prob. 21PS Ch. 2 - Prob. 22PS Ch. 2 - Prob. 23PS Ch. 2 - Prob. 24PS

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