“COUNT()” function: In SQL, the “COUNT()” function will return the total number of rows in the table with satisfying the criteria mentioned in the “WHERE” clause. Table creation: Query to create “CUSTOMER” table: CREATE TABLE CUSTOMER (CUS_CODE INTEGER PRIMARY KEY, CUS_LNAME VARCHAR(20), CUS_FNAME VARCHAR(20), CUS_INITIAL VARCHAR(20), CUS_AREACODE VARCHAR(20), CUS_PHONE VARCHAR(20), CUS_BALANCE Decimal(5, 2)); Query to insert values into “INVOICE” table: INSERT INTO CUSTOMER VALUES (10010, 'Ramas', 'Alfred','A', 615, 844-2573, 0); INSERT INTO CUSTOMER VALUES (10011, 'Dunne', 'Leona', 'K', 713, 894-1238, 0); INSERT INTO CUSTOMER VALUES (10012, 'Smith','Kathy', 'W', 615, 894-2285, 345.86); INSERT INTO CUSTOMER VALUES (10013, 'Olowski', 'Paul', 'F', 615, 894-2180, 536.75); INSERT INTO CUSTOMER VALUES (10014, 'Orlando', 'Myron', '', 615, 222-1672, 0); INSERT INTO CUSTOMER VALUES (10015, 'OBrian', 'Amy','B', 713, 442-3381, 0); INSERT INTO CUSTOMER VALUES (10016, 'Brown', 'James', 'G', 615, 297-1228, 221.19); INSERT INTO CUSTOMER VALUES (10017, 'Williams', 'George', '', 615, 290-2556, 768.93); INSERT INTO CUSTOMER VALUES (10018, 'Farriss','Anne', 'G', 713, 382-7185, 216.55); INSERT INTO CUSTOMER VALUES (10019, 'Smith', 'Olette', 'K', 615, 297-3809, 0);

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.

Answer 1

Question

Chapter 7, Problem 27P

Program Plan Intro

“COUNT()” function:

In SQL, the “COUNT()” function will return the total number of rows in the table with satisfying the criteria mentioned in the “WHERE” clause.

Table creation:

Query to create “CUSTOMER” table:

CREATE TABLE CUSTOMER (CUS_CODE INTEGER PRIMARY KEY, CUS_LNAME VARCHAR(20), CUS_FNAME VARCHAR(20), CUS_INITIAL VARCHAR(20), CUS_AREACODE VARCHAR(20), CUS_PHONE VARCHAR(20), CUS_BALANCE Decimal(5, 2));

Query to insert values into “INVOICE” table:

INSERT INTO CUSTOMER VALUES (10010, 'Ramas', 'Alfred','A', 615, 844-2573, 0);

INSERT INTO CUSTOMER VALUES (10011, 'Dunne', 'Leona', 'K', 713, 894-1238, 0);

INSERT INTO CUSTOMER VALUES (10012, 'Smith','Kathy', 'W', 615, 894-2285, 345.86);

INSERT INTO CUSTOMER VALUES (10013, 'Olowski', 'Paul', 'F', 615, 894-2180, 536.75);

INSERT INTO CUSTOMER VALUES (10014, 'Orlando', 'Myron', '', 615, 222-1672, 0);

INSERT INTO CUSTOMER VALUES (10015, 'OBrian', 'Amy','B', 713, 442-3381, 0);

INSERT INTO CUSTOMER VALUES (10016, 'Brown', 'James', 'G', 615, 297-1228, 221.19);

INSERT INTO CUSTOMER VALUES (10017, 'Williams', 'George', '', 615, 290-2556, 768.93);

INSERT INTO CUSTOMER VALUES (10018, 'Farriss','Anne', 'G', 713, 382-7185, 216.55);

INSERT INTO CUSTOMER VALUES (10019, 'Smith', 'Olette', 'K', 615, 297-3809, 0);

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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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