A relational database is designed to enforce the uniqueness of primary keys by allowing only one row with a given primary key value in a table. A foreign key is a column or a set of columns in a table whose values correspond to the values of the primary key in another table.

8 0

2 years ago

Texture fills are available to add as a slide background true or false

IrinaK [193]

I belive its true but i am not a 100% sure

6 0

3 years ago

Read 2 more answers

Given an array arr, of type int, along with two int variables i and j, write some code that swaps the values of arr[i] and arr[j

Inessa05 [86]

You'll need a helper variable for this, so depending on your programming language, the solution becomes:

int helper;

helper = arr[i];

arr[i] = arr[j];

arr[j] = helper;

3 0

2 years ago

How do you know if someone read your message on messenger?

kherson [118]

It would say that the person read the message on the picture of the person. Example if you texted your friend at 7.00 and it said that the person read at 7.15. got it now?

3 0

3 years ago