Tables: The three tables that are created to describe the relationship between PAINTER, PAINTING, and GALLERY are shown below. Table Name : “PAINTER” The following are the components of “PAINTER” table, PAINTER NUM PAINTER FNAME PAINTER LNAME PAINTER INITIAL 10014 Artiste Josephine P 10015 Itero Julio G 10016 McDonald Theresa Table Name: “PAINTING” The following are the components of “PAINTING” table, PAINTING NUM PAINTING TITLE PAINTER NUM GALLERY NUMBER 20018 Dawn Thunder 10016 18 20023 Vanilla Roses 10015 18 20041 Tired Flounders 10016 23 ...

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To access a database, we need to open a connection to it first and close it once our job is done. Connecting to a database depends on the type of the target database and the database management system (DBMS). For example, connecting to a SQL Server database is different from connecting to an Oracle database. But both these connections have a few things in common: •They have a connection string •They can be opened•They can be closed•They may have a timeout attribute (so if the connection could not be opened within the timeout, an exception will be thrown).Your job is to represent these commonalities in a base class called DbConnection. This class should have two properties: ConnectionString : stringTimeout : TimeSpanA DbConnection will not be in a valid state if it doesn’t have a connection string. So you need to pass a connection string in the constructor of this class. Also, take into account the scenarios where null or an empty string is sent as the connection string. Make sure to…

Answer 1

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Chapter 2, Problem 10P

(a)

Explanation of Solution

Tables:

The three tables that are created to describe the relationship between PAINTER, PAINTING, and GALLERY are shown below.

Table Name : “PAINTER”

The following are the components of “PAINTER” table,

PAINTER NUM PAINTER FNAME PAINTER LNAME PAINTER INITIAL

10014 Artiste Josephine P

10015 Itero Julio G

10016 McDonald Theresa

Table Name: “PAINTING”

The following are the components of “PAINTING” table,

...

PAINTING NUM PAINTING TITLE PAINTER NUM GALLERY NUMBER

20018 Dawn Thunder 10016 18

20023 Vanilla Roses 10015 18

20041 Tired Flounders 10016 23

(b)

Explanation of Solution

Relationship between tables:

The relationship between these tables can be described by using a Crow’s Foot ERD.

Crow’s Foot ERD:

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