auto generate barcode vb net Review Questions in Software

Creator EAN-13 Supplement 5 in Software Review Questions

EXAMPLE 14.5
Reading EAN13 In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Paint EAN-13 Supplement 5 In None
Using Barcode maker for Software Control to generate, create EAN13 image in Software applications.
Write pre- and post-conditions to ensure that a patron cannot check out more than 9 books. patron::borrow pre: self.checkedout->size < 9 post: self.checkedout->size < 10 or post: self.checkedout@pre->size + 1 = self.checkedout->size
GS1 - 13 Decoder In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
EAN 13 Printer In C#.NET
Using Barcode encoder for Visual Studio .NET Control to generate, create GS1 - 13 image in .NET applications.
Review Questions
Drawing EAN-13 Supplement 5 In .NET
Using Barcode maker for ASP.NET Control to generate, create GS1 - 13 image in ASP.NET applications.
EAN / UCC - 13 Maker In Visual Studio .NET
Using Barcode generator for .NET framework Control to generate, create GTIN - 13 image in .NET framework applications.
1. What kind of questions are speci cations supposed to be able to answer 2. Why would ambiguity be a problem
Generate EAN13 In Visual Basic .NET
Using Barcode drawer for VS .NET Control to generate, create EAN13 image in .NET framework applications.
Creating Bar Code In None
Using Barcode creator for Software Control to generate, create barcode image in Software applications.
Formal Notations
EAN 128 Encoder In None
Using Barcode encoder for Software Control to generate, create GS1 128 image in Software applications.
GTIN - 12 Creator In None
Using Barcode generation for Software Control to generate, create UPC Symbol image in Software applications.
3. Why are mathematical notions, such as sets, a good foundation for speci cations 4. What is the di erence between preconditions, post-conditions, and invariants
Make ECC200 In None
Using Barcode encoder for Software Control to generate, create ECC200 image in Software applications.
Code 39 Generation In None
Using Barcode encoder for Software Control to generate, create Code 39 Extended image in Software applications.
Problems
ISBN - 10 Generator In None
Using Barcode maker for Software Control to generate, create ISBN - 10 image in Software applications.
Scanning Data Matrix ECC200 In VS .NET
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications.
1. Given the object model shown in Fig. 14-2, evaluate each of the given OCL statements. If the statement is wrong, explain what is wrong and determine the simplest correction.
EAN13 Recognizer In VS .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in .NET applications.
Draw Matrix Barcode In Java
Using Barcode drawer for Java Control to generate, create Matrix 2D Barcode image in Java applications.
L int t int r() c c a{ordered} b M floats
UPC Code Generator In C#
Using Barcode encoder for Visual Studio .NET Control to generate, create UPC Code image in .NET framework applications.
Linear Generator In C#
Using Barcode printer for .NET Control to generate, create 1D image in Visual Studio .NET applications.
d N b a P
Generate Barcode In VS .NET
Using Barcode creation for ASP.NET Control to generate, create bar code image in ASP.NET applications.
Print Bar Code In .NET Framework
Using Barcode creation for Reporting Service Control to generate, create barcode image in Reporting Service applications.
int x int r()
Fig. 14-2
L self.c->size = 10 self.a = self.c.b.d L::r() : int pre: self.a.b = self.c.a post: t = t@pre + 1 post: result = self.a-> rst.s P self.a.d->size > max self.a.b = self.d.c N::q() : int pre: self.b->isEmpty pre: self.d->forall( l |l.t < 10) post: result = self.d->size
CHAPTER 14 Formal Notations
2. Given the object model shown in Fig. 14-3, explain each OCL statement. What does it specify Is the OCL invariant reasonable Is it always true
family tree marriage birthfam marriage marriage startdate enddate #children marriage child mother father name sex birthdate person person
Fig. 14-3
familytree a) self.person = self.marriage.child marriage b) self.child.birthfam = self c) self.husband.birthdate < self.wife.birthdate person d) self.birthfam.child_include(self) e) self.marriage->size = 1 f) self.marriage.wife.birthdate < self.birthdate 3. Write OCL constraints for a restaurant without a smoking section that seats customers in order of arrival. Class group Char* name Int number Int arrivalorder Class waitlist Group* list[MAX] Int listptr Void addtolist(group* newgroup) Group* seatnext() Class restaurant Waitlist* waiting Void arrive(group* newgroup) Group* seat()
Formal Notations
Answers to Review Questions
1. What kind of questions are speci cations supposed to be able to answer Usually, the questions are about the behavior of the proposed software. Developers should be able to use the speci cations to determine exactly what the software should do in a speci ed situation. 2. Why would ambiguity be a problem If the ambiguity means that the developer will interpret the speci cation di erently than what the user wants, then there will be a problem. 3. Why are mathematical notions, such as sets, a good foundation for speci cations Mathematical notions such as sets are a good foundation for speci cations because sets and set operations are precisely de ned. For example, the union of two sets is well understood. If the behavior of a function can be de ned as operations on speci ed sets, then it will be easy to determine exactly what the function is supposed to do. 4. What is the di erence between preconditions, post-conditions, and invariants A precondition is something that has to be true before a function can execute. A postcondition is something that has to be true on completion of the function. An invariant is something that should be true throughout the execution of the function. Actually, most invariants are true between every operation.
Answers to Problems
1. All are okay except for pre:self.a.b = self.c.a, which should be pre: self.a.b = self.c.d. 2. Given the object model shown in Fig. 14-4, explain each OCL statement. What does it specify Is the OCL invariant reasonable Is it always true familytree a) self.person = self.marriage.child marriage b) self.child.birthfam = self c) self.husband.birthdate < self.wife.birthdate
CHAPTER 14 Formal Notations
family tree marriage birthfam marriage marriage startdate enddate #children marriage child mother father name sex birthdate person person
Fig. 14-4
person d) self.birthfam.child_include(self) e) self.marriage->size = 1 f) self.marriage.wife.birthdate < self.birthdate a. This invariant says that the set of persons is the same as the set of all children or every person has his or her birth marriage listed. This is a reasonable invariant, and it is true if the data is complete. b. This invariant says that every child has his or her birth family listed and it matches the instance that points to the person as a child. This is reasonable and is always true. c. This says that every husband is older than his wife. This invariant can be stated, but it does not match reality. d. This states that the set of children (siblings) reachable from the birthfam includes the person. This is reasonable and is always true. e. This states that the set of marriages for a person is only one. It does not match reality. f. Either your own birthday (if female) or your spouse s (if male) is less than yours. Not reasonable. Not always true. 3. Write OCL constraints for a restaurant without a smoking section that seats customers in order of arrival. Class group Char* name Int number Int arrivalorder Class waitlist Group* list[MAX] Int listptr Void addtolist(group* newgroup) Group* seatnext()
Copyright © OnBarcode.com . All rights reserved.