Answer the following questions concerning Figures 1-16 and 1-17: FIGURE 1-16 SQL definition of ProductLine table CREATE TABLE ProductLine T (ProductLinelD VARCHAR (40) NOT NULL PRIMARY KEY, PIPrlorYearGoal DECIMAL, PICurrentYearGoal DECIMAL); FIGURE 1-17 SQL definition of Product table CREATE TABLE Product T (ProductiD NUMBER(11,0) NOT NULL PRIMARY KEY ProductDescription VARCHAR (50), ProductFinish VARCHAR (20), ProductStandardPrice DECIMAL(6,2), ProductCost DECIMAL, ProductPriorYearGoal DECIMAL, ProductCurrentYearGoal DECIMAL, ProductLinelD VARCHAR (40), FOREIGN KEY (ProductLinelD) REFERENCES ProductLIne T (ProductLineID)); a. What will be the field size for the ProductLineName field in the Product table? Why? b. In Figure 1-17, how is the ProductID field in the Product table specified to be required? Why is it a required attribute? c. In Figure 1-17, explain the function of the FOREIGN KEY definition.

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SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.