A customer name and an unpaid balance is an example of a one-to-many relationship. ✅ [Update]
Thủ Thuật về A customer name and an unpaid balance is an example of a one-to-many relationship. Chi Tiết
Lê Bình Nguyên đang tìm kiếm từ khóa A customer name and an unpaid balance is an example of a one-to-many relationship. được Cập Nhật vào lúc : 2022-11-26 17:00:15 . Với phương châm chia sẻ Bí kíp về trong nội dung bài viết một cách Chi Tiết Mới Nhất. Nếu sau khi tham khảo nội dung bài viết vẫn ko hiểu thì hoàn toàn có thể lại phản hồi ở cuối bài để Tác giả lý giải và hướng dẫn lại nha.In a one-to-many relationship, one record in a table can be associated with one or more records in another table. For example, each customer can have many sales orders.
Nội dung chính Show- Which is an example of the one to many approach quizlet?Which type of events are included in an REA model *?What is used to insert special database commands into application programs?Is the nature of the relationship between two entities which is represented by the labeled line linking them?
A one-to-many relationship looks like this in the relationships graph:
In this example the primary key field in the Customers table, Customer ID, is designed to contain unique values. The foreign key field in the Orders table, Customer ID, is designed to allow multiple instances of the same value.
This relationship returns related records when the value in the Customer ID field in the Orders table is the same as the value in the Customer ID field in the Customers table.
Because relationships work both ways, there are also many-to-one relationships.
Chapter 9 — Database Management Systems TRUE/FALSE
1. The database approach to data management is sometimes called the flat file approach. ANS: F 2. The Database Management System provides a controlled environment for accessing the database. ANS: T
3. To the user, data processing procedures for routine transactions, such as entering sales orders, appe ar to be identical in the database environment and in the traditional environment. ANS: T 4. An important feature associated with the traditional approach to data management is the ability to produce ad hoc reports. ANS: F 5. The Data Definition Language is used to insert special database commands into application progra ms. ANS: F
6. There is more than one conceptual view of the database. ANS: F
7. In the database method of data management, access authority is maintained by systems programmi ng. ANS: F
8. The physical database is an abstract representation of the database. ANS: F
9. A customer name and an unpaid balance is an example of a one-to-many relationship. ANS: F
10. In the relational model, a data element is called a relation. ANS: F
11. Data normalization groups data attributes into tables in accordance with specific design objective s. ANS: T
12. Under the database approach, data is viewed as proprietary or “owned” by users. ANS: F
13. The data dictionary describes all of the data elements in the database. ANS: T
14. A join builds a new table by creating links. ANS: F
15. The deletion anomaly is the least important of the problems affecting unnormalized databases. ANS: F
16. A deadlock is a phenomenon that prevents the processing of transactions. ANS: T
17. Timestamping is a control that is used to ensure database partitioning. ANS: F
18. A lockout is a software control that prevents multiple users from simultaneous access to data.
ANS: T
19. Logical database design is the foundation of the conceptual design. ANS: F
20. An entity is any physical thing about which the organization wishes to capture data. ANS: F
21. An ER diagram is a graphical representation of a data model. ANS: T
22. The term occurrence is used to describe the number of attributes or fields pertaining to a specific entity. ANS: F
23. Cardinality describes the number of possible occurrences in one table that are associated with a si ngle occurrence in a related table. ANS: T
24. A table in third normal form is không lấy phí of partial dependencies, multiple dependencies, and transitive dependencies. ANS: F
25. Improperly normalized databases are associated with three types of anomalies: the update anomal y, the insertion anomaly, and the deletion anomaly. ANS: T MULTIPLE CHOICE
1. All of the following are basic data management tasks except a. data deletion b. data storage c. data attribution d. data retrieval ANS: C
2. The task of searching the database to locate a stored record for processing is called a. data deletion b. data storage c. data attribution d.
data retrieval ANS: D
3. Which of the following is not a problem usually associated with the flat-file approach to data management? a. data redundancy b. restricting access to data to the primary user c. data storage d. currency of information ANS: B
4. Which characteristic is associated with the database approach to data management? a. data sharing b. multiple storage procedures c. data redundancy d. excessive storage costs ANS: A
5. Which characteristic is not associated with the database approach to data management? a. the ability to process data without the help of a programmer b.
the ability to control access to the data c. constant production of backups d. the inability to determine what data is available ANS: D
6. The textbook refers to four interrelated components of the database concept. Which of the following i s not one of the components? a. the Database Management System b. the Database Administrator c. the physical database d. the conceptual database
Which is an example of the one to many approach quizlet?
A customer name and an unpaid balance is an example of a one-to-many relationship. In the relational model, a data element is called a relation. Data normalization groups data attributes into tables in accordance with specific design objectives.Which type of events are included in an REA model *?
REA is an acronym for resources, events, and agents. The REA model views accounting data collection as a system to collect data about the resources, events, and agents within business processes. Business processes involve events in which resources are exchanged by agents. An example of such an sự kiện is a sale.What is used to insert special database commands into application programs?
The Data Definition Language is used to insert special database commands into application programs.Is the nature of the relationship between two entities which is represented by the labeled line linking them?
Statement 2: Cardinality is the nature of the relationship between two entities, as the labeled line connecting them represents.
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