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题目
题目
多项选择题

Assume you have identified a referential integrity problem with your Microsoft Access database. What could the source of your issue be? [Select all that apply]

选项
A.A field with an auto-number data type is linked or related to a field with a short text datatype
B.A field with an auto-number data type is linked or related to a field with a number datatype
C.You have a one-to-many (1:M) relationship
D.Data for a foreign key in one table is trying to relate to data for a primary key in another table that does not exist
E.Your primary key does not appear as a foreign key in another table
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标准答案
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思路分析
Question restatement: You’re asked to identify sources of a referential integrity problem in an Access database, selecting all that apply. Answer options: - A field with an auto-number data type is linked or related to a field with a short text datatype - A field with an auto-number data type is linked or related to a field with a number datatype - You have a one-to-many (1:M) relationship - Data for a foreign key in one table is trying to relate to data for a primary key in another table that does not exist - Your primary key does not appear as a foreign key in another table Analysis of each option: Option 1: A field with an auto-number data type is linked o......Login to view full explanation

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