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Start learning 50% faster. Sign in nowA foreign key is a column (or a set of columns) in one table that refers to the primary key in another table. This relationship enforces referential integrity , ensuring that the value in the foreign key column matches an existing value in the referenced table's primary key column. This mechanism is crucial for relational databases as it defines how data in one table is related to data in another. For example, consider a database with two tables: Orders and Customers .
There are 4 friends A, B, C and D standing in a straight line, though not necessarily in the same order. A and B are ahead of at least 1 person. B stand...
What approximate value will come in place of the question mark (?) in the following equation?
49.85 – 5.31 + 9.97 =?
‘A & B’ means ‘A is the mother of B’
‘A @ B’ means ‘A is the husband of B’
‘A + B’ means ‘A is the wife of B’
Given in the table are the number codes for the given letters. Select the combination of numbers so that the letters arranged accordingly will form a me...
Which of the following terms will replace the question mark (?) in the given series?
IMHP, MPJQ, QSLR, UVNS, ?
Seven athletes A, B, C, D, E, F and G participate in a race. E is ahead of A but behind F. D is ahead of only two athlete. G is running last. C is runni...
Study the following figure and answer the question that follows.
Select the correct mirror image of the given combination when the mirror is placed at MN as shown below.
If 'L' means '×', 'M' means '-', 'N' means '+', and 'O' means '÷', then what will be the value of the following expression?
6 L 25 M 15 N 45 O ...
Select the figure that will come next (?) in the following series.