________ is used to uniquely identify the rows in table.

Related MCQs

• Which one of the following statements is used to create a table?
• Which one of the following functions is used to determine whether a class exists?
• Which one of the following functions is used to determine object type?
• Which one of the following keyword is used to inherit our subclass into a superclass?
• Which keyword is used to refer to properties or methods within the class itself?
• Which keyword allows class members (methods and properties) to be used without needing to instantiate a new instance of the class?
• A class property used by another class is called ______.
• _________is used to support multiple inheritance
• in PHP ,The____ function is used to return the length (the number of elements) of an array:
• The _____ functions can be used to find the lowest or highest value in a list of arguments: