WGU Course C170 - Data Management (Applications), Exam Question with accurate answers, 100% Accurat

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WGU Course C170 - Data Management (Applications), Exam Question with accurate answers, 100% Accurate. A salesperson is authorized to sell many products and a product can be sold by many salespers... ons. Which kind of binary relationship does this scenario describe? A One-to-one B One-to-many C One-to-one binary D Many-to-many D Which kind of relationship is displayed in this entity-relationship diagram? A Many-to-many unary B Many-to-many binary C One-to-one unary D One-to-one binary A Which kind of relationship is displayed in this entity-relationship diagram? A Binary many-to-many B Unary one-to-one C Ternary many-to-many D Ternary one-to-one D Unary many-to-many E Binary one-to-one B How is this portion of the entity-relationship diagram read, from left to right? A At least one book was written by an author. B Only one book was written by one author. C No books are written by an author. D One book was written by more than one author. A Which two examples are attributes? Choose 2 answers 1 A meeting code 2 A person attending a meeting 3 An employee number 4 A sales meeting A 1,3 B 2,4 A Which delete rule sets column values in a child table to a missing value when the matching data is deleted from the parent table? A Restrict B Cascade C Matching D Set-to-Null D In this entity-relationship diagram, Salesperson 361 is related to two customers. The table follows the restrict delete rule. What happens if someone tries to delete Salesperson 361 from the customer records? A The delete occurs immediately. B The lack of a salesperson is flagged for later. C A new salesperson is assigned instead. D The delete is prohibited. D Refer to the given SQL statement. CREATE TABLE member(member_idINT UNSIGNED NOT NULL AUTO_INCREMENT,PRIMARY KEY (member_id),last_nameVARCHAR(20) NOT NULL,first_nameVARCHAR(20) NOT NULL,suffixVARCHAR(5) NULL,expirationDATE NULL,emailVARCHAR(100) NULL,streetVARCHAR(50) NULL,cityVARCHAR(50) NULL,stateVARCHAR(2) NULL,zipVARCHAR(10) NULL,phoneVARCHAR(20) NULL,interestsVARCHAR(255) NULL); Which two columns are created as something other than variable-length strings in this statement? Choose 2 answers 1 member_id 2 expiration 3 suffix 4 email 5 last name 6 city A 1,2 B 3,4 A 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? A Move the data from the third column into the first column. B Move the data from the third column into its own table. C Move the data from the first two columns into separate tables. D Move the data from the second column into the third column. B 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? A First normal form B Second normal form C Third normal form D Fourth normal form B 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? A Compound B Composite C Primary D Foreign D In this entity-relationship diagram, many salespersons are shown as working in at least one office. How is the relationship between salespersons and offices represented in the diagram? A It is linked through the salesperson ID. B It is indicated by the tables' adjacency. C It is undefined. D It is linked through the office ID. D? Which command creates a database only if it does not already exist? A IF NOT EXISTS CREATE DATABASE db_name ; B CREATE DATABASE IF NEW db_name ; C IF NOT EXISTS db_name ; D CREATE DATABASE IF NOT EXISTS db_name ; A 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? A WHERE PRODCOST>=20; B WHERE PRODCOST=20; C AND PRODCOST=20; D AND PRODCOST>=20; B What does WHERE identify in a basic SQL SELECT statement? A A table's intersection data B The associative entity C A range of included columns D The rows to be included D 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? A WHERE EMPNUM > 1000; B WHERE EMPNUM >= 1000; C WHERE EMPNUM => 1000; D WHERE EMPNUM = 1000+; B Refer to the given SQL statement. SELECT PRODNUM, SUM(QUANTITY) FROM SALESPERSON Which line, when added to the end of the statement, returns the total number of each kind of product by product number? A ORDER BY PRODNUM; B GROUP BY PRODNUM; C COUNT PRODNUM; D SUM PRODNUM; B Which data definition language statement affects databases or objects in them? A INSERT B NULL C ALTER D SELECT C What does the DELETE statement do? A It removes rows from a table. B It removes views. C It removes columns not named in the column list. D It removes columns from a table. A Which condition must be in effect to use the INSERT INTO ... VALUES syntax for an INSERT statement? A The VALUES list must contain a value for each non-null valued column in the table. B The INSERT INTO portion of the statement must refer to a sampdb database table. C The INSERT INTO portion of the statement must generate a LOAD DATA statement. D The VALUES list must contain a value for each row in the table. A Refer to the given SQL statement. CREATE TABLE mytbl ( f FLOAT(10,4), c CHAR(15) NOT NULL DEFAULT 'none', i TINYINT UNSIGNED NULL ); Which kind of data type is FLOAT in this statement? A Decimal B Data C String D Integer A Which two SQL data types can represent images or sounds? Choose 2 answers 1 FLOAT 2 TERNARY 3 SOUNDBLOB 4 TINYBLOB 5 BINARY 6 INT A 4,5 B 1,2 A Refer to the given SQL statement. CREATE TABLE CUSTOMER (CustomerIDINT NOT NULL AUTO_INCREMENT, LastName VARCHAR(100) NOT NULL, FirstName VARCHAR(100) NOT NULL, PRIMARY KEY( CustomerID )); Which component of the command indicates the table's name? A TABLE CUSTOMER B CustomerID C CUSTOMER D INT C Which method creates an empty copy of a table and then populates it from the original table? A CREATE TABLE ... INTO followed by INSERT INTO: B INSERT TABLE ... LIKE followed by SELECT: C INSERT TABLE ... SELECT followed by INSERT INTO ... LIKE: D CREATE TABLE ... LIKE followed by INSERT INTO ... SELECT : D Refer to the given SQL syntax. ALTER TABLE tbl_name action [, action ] ... ; What does this syntax allow? Choose 2 answers 1 Changing storage space 2 Dropping indexes 3 Changing column data types 4 Adding rows A 2,3 B 3,4 A Which command eliminates a table? A REMOVE TABLE B TRUNCATE TABLE C DELETE TABLE D DROP TABLE D Why is a view used to give controlled access to data? A To move complicated security routines to subqueries B To limit many-to-many relationships between various entities and attributes C To add complexity to encryption techniques D To restrict access to persons retrieving and modifying sensitive information D A database manager plans to create a view of a table and has these two elements: •The CREATE VIEW privilege for the table •A level of privilege for every column selected by the SELECT What else does the manager need to create this view? A A reciprocal level of privilege for every row selected by the SELECT statement B The values created by the syntax INSERT INTO tbl_name VALUES(...),(...),... ; C The SELECT privilege for every column referred to elsewhere in the statement D The level of privilege for every column that is part of the base table C Refer to the given SQL statement. SELECT product_name, product_number, mfg_city FROM product; Which statement, when added before this statement, generates a view? A VIEW viewprod: B ALTER viewprod AS C CREATE VIEW viewprod AS D WHERE VIEW viewprod IS C What is the proper command to change a view? A ALTER VIEW B MODIFY VIEW C UPDATE VIEW D CHANGE VIEW A Refer to the given statement. DROP VIEW EMPLOYEE; What happens as a result of the execution of this statement to the HRDB table on which the EMPLOYEE view is based? A The viewing of data is prohibited. B The view is discarded. C The data is discarded. D Unauthorized access to the view is restricted. B When a product is deleted from the product table, all corresponding rows for the product in the pricing table are deleted automatically as well. What is this referential integrity technique called? A Cascaded delete B Foreign key constraint C Referential delete D Dynamic update A Refer to the given information. CREATE TABLE 'test1' ( contact_id INT(10), name VARCHAR(10), event_id INT(5), Which command should be added to the end to make the event_id attribute the primary key within a CREATE TABLE statement? A PRIMARY KEY (event_id)); B PRIMARY KEY = event_id); C PRIMARY (event_id)' D (PRIMARY KEY: event_id); A What does the clause PRIMARY KEY followed by a field name in parentheses mean in a CREATE TABLE statement? A The column, in parentheses, is the primary key for the table. B The row, in parentheses, can be inserted as the foreign key. C The primary key value, in parentheses, can be used by a column. D The foreign key, in parentheses, is linked to the primary key. A Which statement should be used so that it assigns a foreign key to the customer name? A FOREIGN KEY ( customer_name ) ( index_columns ) B FOREIGN KEY = customer_name REFERENCES table_name ( customer_name ) C FOREIGN KEY ( customer_name ) REFERENCES table_name ( customer_name ) D FOREIGN KEY [ table_name ] ( customer_name ) C Which ALTER TABLE statement adds a foreign key constraint to a child table? A ALTER TABLE child ADD FOREIGN KEY (par_id) REFERENCES parent (par_id) ON DELETE CASCADE; B ALTER TABLE child ADD FOREIGN KEY WHERE parent (par_id) ON DELETE CASCADE; C ALTER TABLE child ADD FOREIGN KEY(par_id) WHERE parent(par_id)ON DELETE CASCADE; D ALTER TABLE child ADD FOREIGN KEY (par_id) ON DELETE CASCADE; A (Refer to the exhibit) The database administrator has been tasked with implementing an index to speed up the retrieval of data based on the city values. The database is using the InnoDB engine. What is the correct syntax to create an index to be built on the city field based on the database information? A ALTER TABLE `Salesperson` ADD INDEX 'city_index' (`city`) B CREATE UNIQUE INDEX city_index ON Salesperson (city); C CREATE INDEX city_index USING HASH ON Salesperson (city); D ALTER TABLE `Salesperson` ADD UNIQUE INDEX 'city_index' (`city`) A What is the name of the special internal database where the query optimizer finds information? A Optimizer catalog B Join catalog C Relational catalog D Query catalog C Which clause in a CREATE TABLE statement creates an index on a field? A INDEX index_columns (index_name) B INDEX index_name (index_columns) C INDEX index_name (index_rows) D INDEX index_rows (index_name) B A database administrator needs to modify an index on the CUSTOMER table called IDX_NAME because there are multiple customers with the same name. It has been determined that it would be desirable to modify the index to also include the telephone number. Which command line will modify the IDX_NAME index on the CUSTOMER table to include both NAME and TELEPHONE as part of the index? A ALTER INDEX IDX_NAME ON CUSTOMER(NAME, TELEPHONE); B MODIFY INDEX IDX_NAME BY CUSTOMER(NAME, TELEPHONE); C CHANGE INDEX IDX_NAME BY CUSTOMER(NAME, TELEPHONE); D REPLACE INDEX IDX_NAME ON CUSTOMER(NAME, TELEPHONE); A Which syntax is the correct way to use the DROP INDEX command to drop a primary key from a table? A DROP INDEX WHERE PRIMARY KEY = tbl_name ; B DROP INDEX `PRIMARY` ON tbl_name ; C DROP INDEX PRIMARY KEY tbl_name; D DROP INDEX `PRIMARY KEY` ON tbl_name; B A database administrator tries to delete a row in a parent table, but the delete fails because a row in another table depends on that row.Which referential-integrity rule is in effect? A The cascade delete rule B The default delete rule C The set-to-null delete rule D The restrict delete rule D A manager deletes the BUILDING_MANAGEMENT row in a DEPARTMENT table. Deleting the row also deletes the GARDENING_TEAM and CLEANING_TEAM rows from the referenced PERSONNEL_TEAMS table. Which referential-integrity rule is in effect? A The restrict delete rule B The default delete rule C The cascade delete rule D The set-to-null delete rule C Refer to the given SQL statement.INSERT INTO st [Show More]

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