ITALY IT001 HR
GERMANY DE002 HR
SPAIN SP03 FINANCE
FRANCE FRO04 SALES
Refer to the exhibit
A company stores the employee data within a key composed of Country UserlD, and Department. These fields are separated by a blank space. The UserlD field is composed of two characters that indicate the country followed by a unique code of two or three digits. A data architect wants to retrieve only that unique code.
A data architect needs to upload different data sources. To properly handle null values, the data architect decides to set all of these values to "Missing Value".
Which syntax should the data architect use?
Refer to the exhibit.
A data architect builds a simple data model to show the relationship between students and exams. The data is loaded. Every StudentID in the Exams table should be found in the Students table. Some students have NOT taken an exam.
The data architect selects the field "StudentID" from the Students table and sees the following:
A data architect needs to fix this anomaly.
What should the data architect do to ensure data integrity?