题目
Homework:Chapter 4 Homework
单项选择题
Part 1The steps you will follow for this project are as follows:Review the Invoice Table LOADING... . Perform the requirements LOADING... on the data file. Use the relational tables that you have created to answer the five multiple choice questions below. (You will have to scroll down to see all of the questions.) As you answer the questions, resize windows as needed to see all relevant data. Part 1This project only has one attempt per question, unless your instructor has provided additional attempts. Review the dashboard before answering the questions. [table] | Save Accounting Table... | | + | Copy to Clipboard... | | + [/table] [table] In the Invoice-Inventory table, how many times is Invoice 57 displayed? [/table] A. 7 B. 3 C. 1 D. 4 [table] | Save Accounting Table... | | + | Copy to Clipboard... | | + [/table] [table] What is the designation of the Invoice ID column in the Invoice table? [/table] A. PK B.PK divided by FK PK divided by FKPK/FK C. 3NF D. FK [table] | Save Accounting Table... | | + | Copy to Clipboard... | | + [/table] [table] How many columns are in the Customer Table? [/table] A. 8 B. 4 C. 3 D. 2 [table] | Save Accounting Table... | | + | Copy to Clipboard... | | + [/table] [table] What is the designation of the Customer ID column in the Customer table? [/table] A. PK B. 3NF C. FK D.PK divided by FK PK divided by FKPK/FK [table] | Save Accounting Table... | | + | Copy to Clipboard... | | + [/table] [table] What is the designation of the Item ID column in the Invoice-Inventory table? [/table] A. 3NF B. FK C.PK divided by FK PK divided by FKPK/FK D. PK
选项
A.A. 7
B.B. 3
C.C. 1
D.D. 4
查看解析
标准答案
Please login to view
思路分析
Let's break down the first question and its options, focusing on the specific data scenario described.
Option A: 7. This choice asserts that Invoice 57 appears seven times in the Invoice-Inventory table. If the underlying dashboard or dataset shows far fewer occurrences for Invoice 57, this would overstate the frequency. Consider whether there are multiple line items or repeated rows for the same invoice; if those are not present or limited, seven is likely too high.
Option B: 3. This option claims Invoice 57 appears three times. To evaluate......Login to view full explanation登录即可查看完整答案
我们收录了全球超50000道考试原题与详细解析,现在登录,立即获得答案。
类似问题
When joining tables using SQL, the tables are typically joined with a condition that equates a _______ in the main table (on the "one" side of the relationship) with a _________ in the secondary table (on the "many" side of the relationship). Generally, the main table is the larger of the two tables. (This is a SQL question, but I am not asking about SQL code. I know what you're thinking...)
In a consumer society, many adults channel creativity into buying things
Economic stress and unpredictable times have resulted in a booming industry for self-help products
People born without creativity never can develop it
更多留学生实用工具
希望你的学习变得更简单
加入我们,立即解锁 海量真题 与 独家解析,让复习快人一步!