What is a dimension? A particular relational database. A particular attribute of information. A particular single...
What is a dimension?
A particular relational database.
A particular attribute of information.
A particular single repository.
A particular entity of information.
Homework Answers
dimension is defined as a particular attribute of information.
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What is a dimension?
A particular relational database.
A particular attribute of information.
A particular single...
QUESTION 1 What is the most common relationship within a relational database? Select the best answer...
QUESTION 1 What is the most common relationship within a relational database? Select the best answer from the following. One-To-One relationship. o One-To-Many relationship. Many-To-Many relationship. Zero-To-Zero relationship. QUESTION 2 What is an "entity'? Select the best answer from the following. An entity, for our purposes, is the same as a table in the database. An entity represents one of the columns in an individual table. There are no entities in a relational database. Entities are only part of NoSQL...
ER to Relational Conversion: Which of the following kind of attribute in an entity set results...
ER to Relational Conversion: Which of the following kind of attribute in an entity set results in the creation of a table separate from the table for the entity set itself? A. Simple Attribute B. Composite Attribute C. Multi-valued Attribute D. Derived Attribute
Please help me answer these: In the relational database model, an entity consists of one and...
Please help me answer these: In the relational database model, an entity consists of one and only one entity instance (or record). A. True B. False 2. In the relational database model, the foreign key name does NOT have to be the same as the primary key name. A. True B. False 3. Logical relationships between tables (or entities) in the relational database model are created with primary and candidate keys. A. True B. False 4. In the relational database...
8. What are the relationships that the relational database is named for? Relationships between entities Relationships...
8. What are the relationships that the relational database is named for? Relationships between entities Relationships between databases b. Relationships between rows and Relationships between fields and columns records 9. A characteristic or quality describing an entity is called a (n): a. attribute c. Field b. Key field d uple __10. In a table for customers, the information about a single customer would reside in a single: a TOW c. field b. table. d. column 11. The device that acts...
An IT support organization within a large company wants to develop a relational database to keep...
An IT support organization within a large company wants to develop a relational database to keep track of its work. We will call users of the organization's service CLIENTs. CLIENTs, as needed, submit requests for help called TICKETs. Each TICKET, in turn, can have multiple PROBLEM ITEMs. There are many SUPPORT SPECIALISTs in the organization. Eventually each PROBLEM_ITEM is assigned to a unique SUPPORT_SPECIALIST. Each SUPPORT SPECIALIST can have multiple PROBLEM ITEMs assigned to him or her. Since PROBLEM ITEMs...
Question 4 To represent a one-to-many relationship in a relational database design, _____. Group of answer...
Question 4 To represent a one-to-many relationship in a relational database design, _____. Group of answer choices the key of the child is placed as a foreign key into the parent the key of the parent is placed as a foreign key into the child an intersection table must be created the key of the table on the "many" side is placed in the table on the "one" side the keys of both tables are joined into a composite key...
Consider the following relational database to manage concert and ticket sales. The relations are artist, concert,...
Consider the following relational database to manage concert and ticket sales. The relations are artist, concert, venue, seat, ticket, and fan. The schemas for these relations (with primary key attributes underlined) are: Artist-schema = (artistname, type, salary) Concert-schema = (artistname, date, venuename, artistfees) Venue-schema = (venuename, address, seating_capacity) Seat-schema=(venuename, row, seatnumber) Ticket-schema = (fanID, date, venuename, row, seatnumber) Fan-schema = (fanID, name, address, creditcardno) Where: • artistname is a unique name for the artist (because of trademark/copyright rules no two...
A Pages entity in a relational database for tracking web browsing has the following attributes: PageID (the primary key, an integer number, required), PageURL (text, maximum 255 characters, required),...
A Pages entity in a relational database for tracking web browsing has the following attributes: PageID (the primary key, an integer number, required), PageURL (text, maximum 255 characters, required), IPAddress (text, maximum 15 characters, required), ViewDateTime (date and time the page was viewed, required). (a) Write an SQL Data Definition Language command to create the table for this entity. (b) Write an SQL Data Definition Language command to add a column for a new attribute to this table: ViewDuration (duration...
How would you represent a one-to-many strong entity relationship in a physical relational database design?
How would you represent a one-to-many strong entity relationship in a physical relational database design?
1. Shown below is the relational database schema for a database which contains details regarding bus...
1. Shown below is the relational database schema for a database which contains details regarding bus journeys from Tronoh to various destinations: BusOperator (opCode, opName) Journey(QpCode,GestinationCode price) Destination (destinationCode, destinationName, distance) a. Formulate the following queries using relational algebra: . Get the name of bus operators (e.g., Plusliner, Sri Maju etc.) that provide journeys which are priced at more than RM50.00. (3 marks ii. List the names of a destinations along with their prices provided by Plusliner. 3 marks] b....
QUESTION 1 What is the most common relationship within a relational database? Select the best answer from the following. One-To-One relationship. o One-To-Many relationship. Many-To-Many relationship. Zero-To-Zero relationship. QUESTION 2 What is an "entity'? Select the best answer from the following. An entity, for our purposes, is the same as a table in the database. An entity represents one of the columns in an individual table. There are no entities in a relational database. Entities are only part of NoSQL...
8. What are the relationships that the relational database is named for? Relationships between entities Relationships between databases b. Relationships between rows and Relationships between fields and columns records 9. A characteristic or quality describing an entity is called a (n): a. attribute c. Field b. Key field d uple __10. In a table for customers, the information about a single customer would reside in a single: a TOW c. field b. table. d. column 11. The device that acts...
An IT support organization within a large company wants to develop a relational database to keep track of its work. We will call users of the organization's service CLIENTs. CLIENTs, as needed, submit requests for help called TICKETs. Each TICKET, in turn, can have multiple PROBLEM ITEMs. There are many SUPPORT SPECIALISTs in the organization. Eventually each PROBLEM_ITEM is assigned to a unique SUPPORT_SPECIALIST. Each SUPPORT SPECIALIST can have multiple PROBLEM ITEMs assigned to him or her. Since PROBLEM ITEMs...
1. Shown below is the relational database schema for a database which contains details regarding bus journeys from Tronoh to various destinations: BusOperator (opCode, opName) Journey(QpCode,GestinationCode price) Destination (destinationCode, destinationName, distance) a. Formulate the following queries using relational algebra: . Get the name of bus operators (e.g., Plusliner, Sri Maju etc.) that provide journeys which are priced at more than RM50.00. (3 marks ii. List the names of a destinations along with their prices provided by Plusliner. 3 marks] b....
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