Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 8, Problem 8.48PAE
Suppose you are designing a default value for the age field in a student record at your university. What possible values would you consider, and why? How might the default vary by other characteristics about the student, such as school within the university or degree sought? What is the fundamental problem with this field as a regular field?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
If a field's data type is chosen carefully, can its security be managed?
What are the objectives of selecting a data type for a field?
In what ways does it matter what data type a field is set to be?
Chapter 8 Solutions
Modern Database Management
Ch. 8 - Prob. 8.1RQCh. 8 - Prob. 8.2RQCh. 8 - Prob. 8.3RQCh. 8 - Prob. 8.4RQCh. 8 - Prob. 8.5RQCh. 8 - Prob. 8.6RQCh. 8 - Prob. 8.7RQCh. 8 - Prob. 8.8RQCh. 8 - Explain why you sometimes have to reserve much...Ch. 8 - Why are field values sometimes coded?
Ch. 8 - Prob. 8.11RQCh. 8 - Prob. 8.12RQCh. 8 - Explain why normalized relations may not comprise...Ch. 8 - Prob. 8.14RQCh. 8 - List three common situations that suggest that...Ch. 8 - Explain the reasons why some experts are against...Ch. 8 - Prob. 8.17RQCh. 8 - Prob. 8.18RQCh. 8 - Prob. 8.19RQCh. 8 - Prob. 8.20RQCh. 8 - Prob. 8.21RQCh. 8 - Prob. 8.22RQCh. 8 - One of the strongest recommendations regarding...Ch. 8 - Explain why an index is useful only if there is...Ch. 8 - Indexing can clearly be very beneficial. Why...Ch. 8 - Prob. 8.26RQCh. 8 - Prob. 8.27RQCh. 8 - Describe the role of data dictionary in the...Ch. 8 - Prob. 8.29RQCh. 8 - Prob. 8.30RQCh. 8 - Explain how creating a view may increase data...Ch. 8 - Prob. 8.32RQCh. 8 - Prob. 8.33RQCh. 8 - Prob. 8.34RQCh. 8 - Prob. 8.35RQCh. 8 - Prob. 8.36RQCh. 8 - Prob. 8.37RQCh. 8 - Prob. 8.38RQCh. 8 - Prob. 8.39RQCh. 8 - How can views be used as part of data security?...Ch. 8 - Prob. 8.41RQCh. 8 - Prob. 8.42RQCh. 8 - Consider the following two relations for...Ch. 8 - Prob. 8.44PAECh. 8 - Prob. 8.45PAECh. 8 - Prob. 8.46PAECh. 8 - Prob. 8.47PAECh. 8 - Suppose you are designing a default value for the...Ch. 8 - When a student has not chosen a major at a...Ch. 8 - Prob. 8.50PAECh. 8 - Prob. 8.51PAECh. 8 - Consider the relations in Problem and Exercise...Ch. 8 - Prob. 8.53PAECh. 8 - Prob. 8.54PAECh. 8 - Prob. 8.55PAECh. 8 - Prob. 8.56PAECh. 8 - Prob. 8.57PAECh. 8 - Consider the relations specified in Problem and...Ch. 8 - Prob. 8.59PAECh. 8 - Prob. 8.60PAECh. 8 - Prob. 8.61PAECh. 8 - Prob. 8.62PAECh. 8 - Prob. 8.63PAECh. 8 - Prob. 8.64PAECh. 8 - Problems and Exercises 8-65 through 8-68 refer to...Ch. 8 - Prob. 8.66PAECh. 8 - Problems and Exercises 8-65i5 through 8-68 refer...Ch. 8 - Refer to Figure 4-5 0. For each of the following...Ch. 8 - Prob. 8.69PAECh. 8 - Prob. 8.70PAECh. 8 - Prob. 8.71PAECh. 8 - Prob. 8.72PAECh. 8 - Prob. 8.73PAECh. 8 - Prob. 8.74PAECh. 8 - Prob. 8.75PAECh. 8 - Prob. 8.76PAECh. 8 - Prob. 8.77PAE
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Can the security of a field be managed by choosing the data type it stores?arrow_forwardWhat can you do to guarantee that your model has all it needs to function properly?Why might problem statements benefit from data modeling techniques?arrow_forwardIn order to declare a variable, "type" alone is not sufficient. To phrase this another way, each variable has both a data type as well as some other form of attribute. This idea enables us to represent the characteristics of any variable; but, how can we put it to use?arrow_forward
- In data modeling, it's important to know when to use the supertype/subtype connection.arrow_forwardLook up the average evaluation score earned by instructor Egan for the Emergency Care course: In cell E14, begin to enter a formula using the XLOOKUP Use the instructor name in cell E12 as the value to look up. Use a structured reference to the header row of the Evaluations table as the table to search. Return the value in the range E4:I4. I need help with the sttructured reference refered in #3arrow_forwardWhen a numeric field is given significantly more space than the initial values that are entered into it, what is the cause for this disparity?arrow_forward
- Explain whether "undecidable" is a way to represent null value or default value if a student has not chosen a major at a university and the value of "undecided" is entered for the major field.arrow_forwardThe definition of a variable is required to contain, in addition to the variable's name, the variable's "type" as well as the variable's "additional attributes." Every variable may be assigned to more than one data type. If you could describe the concept, would it be possible for us to more accurately define any variables in the future?arrow_forwardYou are expected to create a student registration system by using C# form application and SQL Server. Project may contain at least the following data by obeying the normalization rules: Data about student's personal information (like adress, phone number, blood type, etc...) Academic information of the students, Course information, Data about the academic personnel. Program may have an answer at least for the following situations: Course list registered by a student. The student list of a searched course. The students of an instructor. The course list that is given by an instructor. The course list that is taken by a student. The instructor(s) that is/are giving a searched course. The age of the male students whose ages are greater than 30 (maybe for military service). List of students who have previously taken the selected course and are nov w re-enrolled The most succesful student in the system and at a course. Give opportunity to delete the students, courses and instructor according…arrow_forward
- The term "interpolation of attributes" is a little vague.arrow_forwardWhen using subtype associations, talk about the database table choices that are accessible.arrow_forwardYour department is interested in keeping track of information aboutmajors. Design a data structure that will maintain useful information for yourdepartment. The roster of majors, of course, should be ordered by last name(and then by first, if there are multiple students with the same last name).Your department is interested in keeping track of information aboutmajors. Design a data structure that will maintain useful information for yourdepartment. The roster of majors, of course, should be ordered by last name(and then by first, if there are multiple students with the same last name).Your department is interested in keeping track of information aboutmajors. Design a data structure that will maintain useful information for yourdepartment. The roster of majors, of course, should be ordered by last name(and then by first, if there are multiple students with the same last name).arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
dml in sql with examples; Author: Education 4u;https://www.youtube.com/watch?v=WvOseanUdk4;License: Standard YouTube License, CC-BY