When a SQL statement is executed in Oracle, the temporary context area is created. This area contains all the relevant information relating to the statement and its execution. The cursor is a pointer to this context area and allows the PL/SQL program to control this area.There are two types of ... Read More

When there is a relationship between two entities of the same type, it is known as a recursive relationship. This means that the relationship is between different instances of the same entity type.Some examples of recursive relationship can be shown as follows −An employee can supervise multiple employees. Hence, this ... Read More

Mathematical functions are very important in SQL to implement different mathematical concepts in queries.Some of the the major mathematical functions in SQL are as follows −ABS(X)This function returns the absolute value of X. For example −Select abs(-6);This returns 6.MOD(X, Y)The variable X is divided by Y and their remainder is ... Read More

To align flex items on small, medium, large and extra large screen size, use the justify-content-*-start class.Let us see first for small screen size −   Interface   Packages   Multithreading In the same way, implement it for medium, large and extra large screen size like the following −justify-content-md-start: Medium ... Read More

To add top rounded corners to an element, use the rounded-top class in Bootstrap 4.I have taken div as the element −Let us learn how to add top rounded corners to an element −ExampleLive Demo       Bootstrap Example             ... Read More

To set a border indicating information, use the border-info class.To implement it −   Information Let us see an example to implement the border-info class −ExampleLive Demo       Bootstrap Example                             .one {       width: 200px;       height: 240px;       margin: 40px;     }             Rectangle with a border indicating information:     Information  

Use the border-0 class in Bootstrap 4 to remove all borders from an element in Bootstrap 4 −   no border Above, we have the div class to no-border class and this allow us to remove the borders from the element.Let us see an example to implement the border-0 class ... Read More

Use the flex-*-fill class to set the flex items to have equal width on different screens as shown in the below code snippet −For Small Width Screen   A   B   C For Medium Width Screen   A   B   C The following is an example to implement the ... Read More

If you want to display flex items right aligned, horizontally and reversed, then use the flex-row-reverse class.Use the class like the following code snippet −   ONE   TWO   THREE The following is an example to show reverse order of flex items −ExampleLive Demo       ... Read More

Use the flex-wrap-reverse class in Bootstrap 4 to wrap flex items and in reverse order.Here is the difference between flex-wrap and flex-wrap-reverse −Set wrap-flex-reverse as in the following code snippet −   Rank 1   Rank 2   Rank 3   Rank 4   Rank 5 You can try to ... Read More