WGU Introduction to IT Exam Questions

In this scenario, the grade for each quiz is considered data. Each student's specific score represents a discrete piece of information, and collectively, these individual grades form the dataset that the instructor analyzes to calculate the minimum, maximum, and average grades1. The other options (average differential, minimum and maximum grade for all quizzes, and average grade for all quizzes) are derived metrics or summaries based on this raw data2.

SQL is the standard language for communicating with relational databases. Applications use SQL to:

* Retrieve data: SELECT queries are used to fetch specific data from database tables.

* Modify data: INSERT, UPDATE, and DELETE statements allow applications to add, change, or remove data in the database.

* Manage database structure: CREATE, ALTER, and DROP statements let applications create tables, modify their structure, or delete them entirely.

To determine a student's previous academic year's course load, the most crucial piece of information is the course identification number. This unique identifier allows for the retrieval of specific data related to each course, such as the number of credit hours or units associated with the course, which directly contributes to the calculation of the course load.

Here's a step-by-step explanation of how this information is used:

1. Identify the Student: The database must have a record of the student for whom the course load is being determined.

2. Retrieve Course Records: Using the student's identification, the database retrieves all course records associated with that student for the specified academic year.

3. Use Course Identification Numbers: Each course taken by the student will have a unique course identification number.

4. Determine Credit Hours: The course identification number can be used to look up the credit hours or units for each course, as this information is typically tied to the course ID in the database.

5. Calculate Course Load: By summing the credit hours for all courses taken in the previous academic year, the student's course load can be calculated.

1. Ethical Leadership: Leaders should model ethical behavior, make decisions in the best interest of stakeholders, and ensure fairness. Ethical leaders influence followers to do the right thing.

2. Ethical Practices: Implement critical organizational practices related to ethics, including recruitment, training, policies, accountability, and decision-making.

3. Ethical Climate: Communicate ethical expectations beyond policies. Foster an environment where employees understand ethics and their implications.

1. How to Create a Culture of Ethics & Accountability in the Workplace

2. Ethics and Organizational Culture

3. How Ethical Leadership Impacts Organizational Culture

4. The Relationship Between Ethics and Organizational Culture

Hierarchical databases use a parent-child relationship model. In this type of database, data is organized into a tree-like structure that implies a single-parent for each record. This model allows the representation of data in a hierarchy which is very much like a family tree. Each parent can have multiple children, but each child has only one parent (also known as a one-to-many relationship).

The hierarchical database model was one of the first database models, historically used with mainframe computers. In this model, records contain information about their groups of parent/child relationships, similar to a family tree. If we consider a database of employees, each department would be a parent node, and each employee within that department would be a child node of the department.