EmployeeID is the primary key for the relation below. Which column violates a rule (characteristic) of a relation? Employee Relation EmployeeID Department PhoneNum PhoneNum 300 Finance 321-299-1234 407-999-2300 200 Sales 407-222-9090 321-365-0912 400 Sales 407-807-1124 407-453-2294 100 HR   321-934-2034   Group of answer choices The column named PhoneNum because you can’t have two columns with the same name. All the columns are valid. The EmployeeID column because the ID numbers are not in order. The Department column.

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A: SELECT * will fetch you all record in table

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A: The select statement is used to select a value from the database. The selected columns are displayed…

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A: Script to List the ISBN of the book, the id, and first name of the editors mentioned in step 2, and…

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A: Here we are joining three tables ASSIGNMENT, EMPLOYEE, and JOB and the assigned job is either 501 or…

Q: rite the SQL statements to create all of the necessary tables to represent the above diagram,…

A: Note: Since you have not provided the database name to write the SQL query so I am using the MYSQL…

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A: Lets see the solution.

Q: If  the functional dependencies are consistent with the above relation,  put TRUE. If they are not,…

A: functionally dependent defines the relationship between attributes, how they are related.  A-> B…

Q: Based on the ERD below, write the SQL statement to display the average hourly job charge for a job.

A: Query to display the average hourly job charge for a job. To get average hourly job charge for all…

Q: Please convert this eerd to relation

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A: The question requires us to write a SQL query that will return the details of instructors who teach…

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A: It is evident by looking at the ERD that, there are no relationships between the attributes which…

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A: Relationship diagram for the central zoo database is drawn below

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A: An entity in a real world object and can be described by using set of attributes.  An entity store…

Q: Given the following relation that stores details about students'  activities:   StudentID…

A: here have to determine functional dependencies are consistent or not.

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A: The assignment number of the assignment is displayed in which the charge is greater than 84.5 and…

Q: ask 3: The Car Maintenance team wants to insert and store the following maintenance types to the…

A: The CREATE TABLE statement is used to create a new table in a database. Syntax: CREATE TABLE…

Fundamentals of Datawarehouse

A data warehouse is a data repository which is used to store large quantities of historical data that are mostly used for creating reports that help businesses to identify their weaknesses and strengths. For example, demographics data about people of a region can help businesses identify the needs and preferences of the region’s population. A data warehouse acts as a central storage for storing data that comes from one or more heterogenous sources. It also consists of data which can be old and of historical value. One of the most important applications of this type of system is that it is used for supporting business intelligence and data analytics applications.