Q&A Hero

Q: List all foreign keys in appropriate tables.

Q: List and/or construct primary keys for each of the tables.

Q: List all the attributes in flower table.

Q: Draw the proper relationship between the customer and order tables, as well as between customer and flower tables.

Q: Jerry, the owner of Exotic Flower, Inc., built a small greenhouse to store several types of exotic flowers that he purchases from wholesale suppliers around the world. Each exotic flower Jerry buys and resells falls into one of several flower groups that differ with respect to their storage needs, duration, time in bloom, price, etc. Each of the orders placed by customers specifies the type of exotic flower, the supplier it came from, the date of order, expected delivery date, flower condition on delivery, as well as the quantity ordered. Customer's data contain all the standard information needed to collect payment and deliver the flowers.For questions 87 - 91, please refer to the preceding paragraph.List all the entities for Exotic Flower, and describe their relationships with other entities.

Q: List all foreign keys in appropriate tables.

Q: List and/or construct primary keys for each of the tables.

Q: List all the attributes in vehicle table.

Q: Draw the proper relationship between the customer and booking tables, as well as between booking and payment tables.

Q: Plymouth Car Rental started with two compact cars and has expanded its fleet of vehicles with several sedans and trucks. When a customer books a rental, his/her age has to be at least 18 for compact cars and sedans, which are rented by the day and must be returned the following morning by 11 AM. Trucks are rented for a maximum of six hours. The owner requires a deposit on the reservation to be paid within seven days of booking. Vehicle records consist of the makes and types (Honda sedan), color, seating capacity, required deposit, rental rate, and rental limit (in hours). Customer data consists of customer's names, addresses, phone numbers, and birth dates. Bookings identify the customer, vehicle, as well as the time rented and returned. There can be several payments up until the reservation date. Payments must reflect the payment status for each booking, including deposit, when the deposit was made, then each of the payments made, and when the entire payment was completed.For questions 82 - 86, please refer to the preceding paragraph.List all the entities for Plymouth Car Rental, and describe their relationships with other entities.

Q: An __ table is a child of two parent tables that are in a many-to-many relationship.

Q: Relational databases achieve a high degree of data independence by deriving _ from base table in order to protect those tables from the end user.

Q: Relational databases use __ links between related tables, whereas network databases use _physical_ links between related tables.

Q: A table is said to be in first normal form when each field in that table contains _.

Q: _ integrity requires that foreign key values match existing primary key values in the table to which they refer.

Q: _ integrity requires that the designer specify a primary key at the time the table is created.

Q: Email address as a primary key violates __ property every primary key should support.

Q: A primary key __ identifies each record in a table.

Q: OrderID is an example of a __ primary key.

Q: In a parent/child relationship, the crow's foot always points toward the __ table.

Q: In an ER diagram, a line between two entities with a crow's foot at a single end of the line represents a __ relationship.

Q: Attributes are like __; they describe properties of entities.

Q: Relationships are like __; they are acts of possession.

Q: Entities are like __; they are persons, places, or things.

Q: ER diagrams make it much easier to understand the __ among entities in the database.

Q: The most common way of designing a relational database is through the creation of a(n) __.

Q: DBA stands for __.

Q: SQL is a command language that allows __ to communicate with a database.

Q: RDBMS is a software that prevents unauthorized access to a__.

Q: In a relational database, tables are called __.

Q: In a relational database, rows in a table are called __.

Q: Forms are used to __ data into a database.

Q: Businesses have __ that allow end user to interact with a database.

Q: End users typically have an__ access to a database.

Q: Information systems include people, policies, computers, and __.

Q: Fourth-Generation Languages like SQLa) are procedural and record oriented.b) require significant amount of looping.c) are nonprocedural and table oriented.d) are oriented towards processing binary code.

Q: In an order table, foreign key for a customer table would be named as which of the following? a) Customer$name b) Order$date c) Customer$email d) OrderID

Q: Customer's phone number does not satisfy which of the following primary key desired properties? a) Unique b) Minimal c) Non-null d) Nonupdateable

Q: Primary keys can be formed a) from an existing single field. b) from several existing fields. c) as computer-generated field. d) using all of the above.

Q: In a doctor/patient relationship, a visit represents a a) parent table. b) child table. c) sibling table. d) third table.

Q: Customer/product relationship is an example of a) one-to-one relationship. b) one-to-many relationship. c) many-to-many relationship. d) difficult relationship.

Q: Many-to-many relationships are represented by a a) parent table. b) child table. c) sibling table. d) third table.

Q: Customer/order relationship is an example of a) one-to-one relationship. b) one-to-many relationship. c) many-to-many relationship. d) difficult relationship.

Q: In a one-to-many relationship, the crow's foot always points to the a) child table. b) parent table. c) sibling table. d) grandparents table.

Q: Crow's feet at both ends of the line represent which of the following? a) One-to-one relationship b) One-to-many relationship c) Many-to-many relationship d) Not a proper relationship representation

Q: A crow's foot at the single end of the line represents which of the following? a) One-to-one relationship b) One-to-many relationship c) Many-to-many relationship d) No relationship

Q: ER diagrams use which of the following as a symbol for a relationship? a) Diamond b) Triangle c) Box d) Line

Q: ER diagrams use which of the following as a symbol for an entity? a) Diamond b) Triangle c) Box d) Line

Q: Attributes (names, phone numbers, addresses) are like a) nouns. b) verbs. c) adjectives. d) sentences.

Q: Relationships (possessions) are like a) nouns. b) verbs. c) adjectives. d) sentences.

Q: Entities (persons, places, things) are like a) nouns. b) verbs. c) adjectives. d) sentences.

Q: Databases are designed as a group of related a) entities. b) attributes. c) relationships. d) fields.

Q: DBA is the person who a) runs the RDBMS. b) grants database access to end users. c) maintains the database using RDBMS. d) All of the above.

Q: SQL would be best described as doing which of the following? a) Allowing the end user to communicate with RDBMS b) Enabling the database to communicate with RDBMS c) Allowing RDBMS to communicate with the database administrator. d) Allowing the RDBMS to communicate with database server hardware.

Q: SQL stands for which of the following? a) Structured query language b) Simple query language c) Structured queuing language d) Simple query list

Q: RDBMS can be described as doing which of the following? a) Provides end user with unrestricted access to data and procedures b) Prevents authorized end users from accessing data and procedures c) Provides authorized end users with restricted access to data and procedures d) Provides unauthorized users with restricted access to data and procedures

Q: RDBMS stands for which of the following? a) Rational database management software b) Relational database management system c) Rapid database maintenance system d) Relational database management structure

Q: RDBMS can be best defined using which of the following? a) A software that runs on the Web server b) A software that runs on the mail server c) A software that runs on the database server d) A hardware on which the database resides

Q: In relational database, rows in a table are called a) tuples. b) fields. c) attributes. d) relations.

Q: In relational database, columns in a table are called a) tuples. b) fields. c) records. d) relations.

Q: In a relational database, tables are called a) tuples. b) fields. c) attributes. d) relations.

Q: Reports, such as order summary, are used for a) data input. b) result output. c) data formatting. d) data storage.

Q: Forms in Web pages, such as order forms, are used for a) data input. b) result output. c) data formatting. d) data storage.

Q: Which of the following describes the relationship between an end user and a database? a) End user has a direct access to a database. b) End user can never access a database. c) End user interacts with a database front-end program. d) End user can only interact with the database through a database administrator.

Q: Relational database is a part of a(n) a) relational system. b) information system. c) physical system. d) storage system.

Q: Object-oriented databases are easier to use than relational databases.

Q: Network database has physical pointers to connect related tables.

Q: Foreign key in the child table is defined over the same set of values as the primary key in the parent table.

Q: Foreign keys link the related records between parent and child tables.

Q: Email address satisfies all of the desired primary key properties.

Q: Two fields, longitude and latitude, together form a primary key for a location table.

Q: A primary key uniquely identifies each field in a table.

Q: Attribute and record are typically used interchangeably.

Q: Entity and table are typically used interchangeably.

Q: Crow's feet at the both ends of a line represent a many-to-many relationship.

Q: A crow's foot at the single end of a line represents a one-to-many relationship.

Q: Relationships in today's ER diagrams are modeled as lines.

Q: Entities in today's ER diagrams are modeled as diamonds.

Q: Relationships are verbs (possessions) such as customer places an order.

Q: Attributes are nouns (people, places, things) such as orders and customers.