Which of the following statements is true?

Correct query to find out the number of ENUM('M','F','NA') datatypes columns that exist in all databases?

Examine the description of the STUDENTS table: STD_ID INT COURSE_ID VARCHAR (10) START_DATE DATE END_DATE DATE The aggregate functions valid on the START_DATE column are:

Consider the following tables: Books ------ BookId BookName AuthorId SubjectId PopularityRating (the popularity of the book on a scale of 1 to 10) Language (such as French, English, German etc) Subjects --------- SubjectId Subject (such as History, Geography, Mathematics etc) Authors -------- AuthorId AuthorName Country Which query will determine how many books have a popularity rating of more than 7 on each subject?

How can a InnoDB database be backed up without locking the tables?

Is it possible to use group by clause to concatenate strings?

Which are valid encryption functions?

You can not associate a Trigger with?

Consider the following Table EMP: ------ empId empName empSalary empJoinDate Which SQL is incorrect for finding out the count of records on EMP table where empJoinDate is between 2012-10-01 and 2012-12-30?

Which is correct in regards to the syntax of the code below? SELECT table1.this, table2.that, table2.somethingelse FROM table1 INNER JOIN table2 ON table1.foreignkey = table2.primarykey WHERE (some other conditions)

Which is not a valid Bit operator?