DATABASE FUNDAMENTALS
WHAT IS DATABASE MANAGEMENT
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[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Detailed explanation-1: -COUNT(*) returns the number of rows in a specified table, and it preserves duplicate rows. It counts each row separately. This includes rows that contain null values.
Detailed explanation-2: -SQL SELECT COUNT(*) function SQL SELECT statement can be used along with COUNT(*) function to count and display the data values. The COUNT(*) function represents the count of all rows present in the table (including the NULL and NON-NULL values).
Detailed explanation-3: -To query more than 1000 rows, there are two ways to go about this. Use the ‘$offset=’ parameter by setting it to 1000 increments which will allow you to page through the entire dataset 1000 rows at a time. Another way is to use the ‘$limit=’ parameter which will set a limit on how much you query from a dataset.
Detailed explanation-4: -The LIMIT clause is used in the SELECT statement to constrain the number of rows in a result set. The LIMIT clause accepts one or two arguments. The values of both arguments must be zero or positive integer constants.