The answer is Count. Count is an aggregate method in SQL that returns the number of rows for a specified column that have non-null values.
<h3>What is the Meaning of Null?</h3>
When a field in a database has no values at all, this is known as null and indicates that the field’s value is unknown.
A null value for a number field, text field, or space value is different from a zero value. Null indicates that no value has been recorded in a database field.
A value and a null cannot be compared. The Structured Query Language query cannot be written as SELECT * FROM Customer where email Address=null, for instance, if it is intended to obtain all customers without email addresses from a Customer Addresses table.
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<u>Answer:
</u>
The best approach for dealing with this teacher would be to be polite but reserve your friendship until you know her and the administration better.
<u>Explanation:
</u>
- In a new workplace, there are possibilities that there might be some people with prejudices about other people working in the same place.
- Moreover, there might also be some people who might try to take advantage of your position or your nature by being extra nice to you initially.
- In such situations, not getting along much with people that you are skeptical about is the best approach.
Answer: False
Explanation:
Balanced scorecard approach is the mechanism through which a strategic plan for prioritization of tasks, monitoring day to day activities, sharing path towards achieving goal, management etc.It helps in management and monitoring of progress of the organization in terms of project, service and products.
According to the question, balanced scorecard approach used by project manager will not be used for calculation of external business , risk, supplier and other resources of the organization.
Therefore, the given statement is false.
