C170 - PRE-ASSESSMENT Rated A+

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A salesperson is authorized to sell many products and a product can be sold by many salespersons. Which kind of binary relationship does this scenario describe? One-to-one One-to-many Many-to-m ... any One-to-one binary Ans- Many-to-many Which two examples are attributes? Choose 2 answers A person attending a meeting An employee number A sales meeting A meeting code Ans- An employee number A meeting code Which delete rule sets column values in a child table to a missing value when the matching data is deleted from the parent table? Restrict Cascade Matching Set-to-Null Ans- Set-to-Null Refer to the given SQL statement. CREATE TABLE member ( member_id INT UNSIGNED NOT NULL AUTO_INCREMENT, PRIMARY KEY (member_id), last_name VARCHAR(20) NOT NULL, first_name VARCHAR(20) NOT NULL, suffix VARCHAR(5) NULL, expiration DATE NULL, email VARCHAR(100) NULL, street VARCHAR(50) NULL, city VARCHAR(50) NULL, state VARCHAR(2) NULL, zip VARCHAR(10) NULL, phone VARCHAR(20) NULL, interests VARCHAR(255) NULL ); Which two columns are created as something other than variable-length strings in this statement? Choose 2 answers member_id last name suffix expiration email city Ans- member_id expiration Employee_ID Employee_Name Office_Address 12342 Jacob 54123 Main Street 12346 Michael 354 Center Avenue 12846 Ethan 54123 Main Street 12887 Joshua 54123 Main Street 12894 Daniel 354 Center Avenue 13097 Alexander 354 Center Avenue 13112 Anthony 54123 Main Street 13411 William 354 Center Avenue 13987 Christopher 354 Center Avenue 13998 Matthew 54123 Main Street This database table has ten different employee numbers in the first column. Employee_ID is the primary key. In addition, it has ten different names in the second column and two office addresses repeated five times each in the third column. Which action should be used to translate this data into third normal form? Move the data from the third column into the first column. Move the data from the third column into its own table. Move the data from the first two columns into separate tables. Move the data from the second column into the third column. Ans- Move the data from the third column into its own table. A database manager starts to convert data that has been normalized into a form that conforms to the relational model. A simple primary key has been established and all the repeating groups have been deleted. In which form is this data? First normal form Second normal form Third normal form Fourth normal form Ans- Second normal form Two attributes in two related tables have the exact same domain of values. The attribute is a primary key in one table. Which kind of key is the attribute in the other table? Foreign Primary Compound Composite Ans- Foreign Which command creates a database only if it does not already exist? IF NOT EXISTS db_name ; CREATE DATABASE IF NEW db_name ; CREATE DATABASE IF NOT EXISTS db_name ; IF NOT EXISTS CREATE DATABASE db_name ; Ans- CREATE DATABASE IF NOT EXISTS db_name ; Refer to the given SQL statement. SELECT PRODNUM, PRODNAME FROM PRODUCT Which line should be added to the end of the statement to return the product numbers and product names for products that cost 20 dollars? WHERE PRODCOST=20; AND PRODCOST=20; WHERE PRODCOST>=20; AND PRODCOST>=20; Ans- WHERE PRODCOST=20; What does WHERE identify in a basic SQL SELECT statement? The associative entity The rows to be included A table's intersection data A range of included columns Ans- The rows to be included Refer to the given SQL statement. SELECT EMPNUM FROM EMPLOYEE Which line added to the end of the statement returns employee numbers of at least 1000? WHERE EMPNUM = 1000+; WHERE EMPNUM > 1000; WHERE EMPNUM => 1000; WHERE EMPNUM >= 1000; Ans- WHERE EMPNUM >= 1000; Refer to the given SQL statement. SELECT PRODNUM, SUM(QUANTITY [Show More]

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