SELECT statement: It is used to retrieve information from the table or database . The syntax for the “SELECT” statement is given below: Syntax: SELECT * FROM table_Name; GROUP BY Clause: The GROUP BY clause is used to group the result of a SELECT statement done on a table where the tuple values are similar for more than one column Syntax: SELECT expression1, expression2, expression_n, aggregate_function (expression) FROM table_name WHERE conditions GROUP BY expression1, expression2, expression_n; HAVING clause: “HAVING” clause is used to limit groups “HAVING” clause, used to overcome “WHERE” clause because, “HAVING” clause uses aggregate functions. Syntax: SELECT column_Name1, column_Name2 FROM table_name WHERE [conditions] GROUP BY column_name(s) HAVING [conditions] ORDER BY column_name;

Question

Dijkstra's Algorithm (part 1). Consider the network shown below, and Dijkstra’s link-state algorithm. Here, we are interested in computing the least cost path from node E (note: the start node here is E) to all other nodes using Dijkstra's algorithm. Using the algorithm statement used in the textbook and its visual representation, complete the "Step 0" row in the table below showing the link state algorithm’s execution by matching the table entries (i), (ii), (iii), and (iv) with their values. Write down your final [correct] answer, as you‘ll need it for the next question.

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Chapter 1, Problem 11CAT

Program Plan Intro

SELECT statement:

It is used to retrieve information from the table or database. The syntax for the “SELECT” statement is given below:

Syntax:

SELECT * FROM table_Name;

GROUP BY Clause:

The GROUP BY clause is used to group the result of a SELECT statement done on a table where the tuple values are similar for more than one column

Syntax:

SELECT expression1, expression2, expression_n, aggregate_function (expression) FROM table_name WHERE conditions GROUP BY expression1, expression2, expression_n;

HAVING clause:

“HAVING” clause is used to limit groups “HAVING” clause, used to overcome “WHERE” clause because, “HAVING” clause uses aggregate functions.

Syntax:

SELECT column_Name1, column_Name2 FROM table_name WHERE [conditions] GROUP BY column_name(s) HAVING [conditions] ORDER BY column_name;

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Dijkstra's Algorithm (part 1). Consider the network shown below, and Dijkstra’s link-state algorithm. Here, we are interested in computing the least cost path from node E (note: the start node here is E) to all other nodes using Dijkstra's algorithm. Using the algorithm statement used in the textbook and its visual representation, complete the "Step 0" row in the table below showing the link state algorithm’s execution by matching the table entries (i), (ii), (iii), and (iv) with their values. Write down your final [correct] answer, as you‘ll need it for the next question.

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