is the number of attributes/fields in a relation. a. Degree b. Cardinality O c. Tuple d. Row
Q: B3. How many attributes and tuples are there in the Cartesian product of the above two relations?…
A: According to the information given we have to define the number of attributes and number of tuples.
Q: The degree of a relation is the number of its columns. True False
A: Defined the given statement as true or false
Q: Explain why an index is only useful if the values of an attribute are different enough.
A: Introduction Use of an index with a wide range of values A file index is a table or other data…
Q: A relation cannot have: Multi-values attributes Several super-keys O Composite attributes Attributes…
A: Answer:
Q: Part of the primary key may not determine a non-key field.
A: If any relation/table is in second normal form means it dont have any partial functional…
Q: How relation listening important?
A: The relationship that is built between people when they communicate is the focus of relational…
Q: 5. Minimal Superkeys are called a. Schema keys b. Candidate keys c. Domain keys d. Attribute keys
A: Here is the solution which is mentioned below:
Q: Write a detailed contrast between "Relation" & "Relationship" in Dbms
A: Relation refers to a single table in DBMS whereas relationship refers to how two tables are…
Q: An attributes in a relation coming from another relation is called: * O foreign key fields…
A: An attributes in relation coming from another relation is called
Q: Under what circumstances can an attribute of a relation be of variable length?
A: An attribute of a relation is the characteristic which is specified in a column. A relation is a…
Q: 1)A tuple is a named column of a relation. True or alse 2)Each attribute in a relation has a…
A: Since you have asked multiple question, we will solve the first 3 questions for you. If you want any…
Q: Please convert this eerd to relation
A: Given Entity relationship diagram contains Defendant, Case and Plaintiff entities. Each entity…
Q: 10. print FLOOR(SQRT(5)) statement returns a) 5. b) 2. с) 3. d) 2.23. e) 25. 11. Which one of the…
A: I have given an answer in step 2.
Q: What is PrOPertieS Of relAtiOnS?
A: Given: Properties of Relation
Q: Question 9: The maximum number of superkeys for the relation schema R(E,F,G,H) with E as the key is…
A: The maximum number of superkeys for the relation schema R(E,F,G,H) with E as the key is 8. Option 4…
Q: 1. Given the following relation that stores details about students' activities: StudentID…
A: here have to determine functional dependencies with given relation.
Q: Can a composite attribute be part of a composite key
A: Composite attribute as a composite key Composite attribute is a attribute that contains more than…
Q: The value of the candidate key cannot uniquely identify each tuple in a relation. True O False…
A: 1. The Value of the Candidate key is used to Identify the unique tuple in the relation. Your Answer…
Q: FK (if any) for each relation. Apt.# City St fname Iname name Ad id id name address (0,1) (1,1)…
A: Here relationship between Administrator is 1:1 where participation of Administrator is partial and…
Q: What exactly does it mean to define a relation? Determine the aspects that contribute to the…
A: Start: A connection is the same thing as a table with two dimensions. It includes a certain…
Q: ER Mapping : Convert the ER diagram into a relational database schema. For each relation, specify…
A: Relational Model: Entities: Bank Code Name Addr Bank Branch BranchNo Addr Account…
Q: Briefly describe the main difference between a relation and a standard file.
A: Comparing the file system and database management system1. DBMS stores directly in a database, while…
Q: Create Relational Model of the given ERD. Highlight the mandatory foreign keys in your relational…
A: Objective: An entity-relationship diagram is given including several relations like Book, Publisher,…
Q: Hotel(hID, hName, city) primary key is hID Guest(gID, gName, gAddress) primary key is gID Room(hID,…
A: Select guests who stayed at least 1 day in New York City hotels between September 8, 2001, and…
Q: 19. The ______ is the one in which the primary key of one relation is used as a normal attribute in…
A: Referential relation is the relationship that can be defined between two tables using common…
Q: 32. In a relational model, relations are termed as a. Tuples b. Attributes c. Rows d. Tables
A: The relational data model is a representation of the relationships between different relations in a…
Q: What is an unnormalized relation? Is it a relation according to the definition of the word relation?
A: In a database management system, a relation is a collection of interconnected tables or a single…
Q: 26. Table is synonymous with the term: a. record b. relation c. column d. field
A: a database language for relational databases, relations are represented by tables, where each row of…
Q: A relation that has no transitive dependencies is in __________ normal form.
A: Normalization in DMBS : In designing the database, there is a requirement to remove all the types…
Q: Define the term Relation?
A: Answer: A relation between two sets is a collection of ordered pairs containing one object from…
Q: Row is synonymous with the term: a. record b. relation c. column d. field
A: In the above mentioned question it asked us the Row is synonymous with the term.the answer is given…
Q: Which of the following are terms that correspond to the Relational Database term “Entity"? Mark all…
A: In relational table entity means the name of the table or the heading of the table.
Q: A relation contains the points {(-10,5), (-5,1), (0,-3)}. What is the range of the relation? A…
A: Here in this question we have given three realtion and we have asked to find the range and domain of…
Q: w many partial dependencies exist in the relation? v many full dependencies exist in the relation? w…
A: 1) Closure (AE) ={A, E, B, C, D, F, G} Closure (AEI) ={A, E, I, B, C, D, F, G, H, J, K, L} Key for…
Q: Which normal form requires that, no non-key attribute should functionally depend on a part of the…
A: This question says about Regardless of the typical form, no non-key attribute should depend on any…
Q: :When the primary key is not a composite key, the relation is said to be in at least fifth normal…
A: Lets see the solution.
Q: ?Which type of relation is an excellent candidate for improvement to second normal form relation…
A: The suitable answer is (a) Relation with an AutoNumber primary key field.
Q: What is the relationship between the primary key of a relation and the functional dependencies among…
A: The fundamental rule of normalization says that each of the non-key attributes should be completely…
Q: What is the connection between a relation's primary key and the functional relationships between all…
A: Introduction: Relational database theory is built on the foundation of primary and foreign keys.…
Q: Hotel(hID, hName, city) primary key is hID Guest(gID, gName, gAddress) primary key is gID Room(hID,…
A: The SQL Queries are as follows:
Q: true/false INNER JOIN combines two relations. It takes the second relation, and…
A: *Multiple Sub- parts* As per our company guidelines we are supposed to answer ?️only first 3️⃣…
Q: A relation that contains a minimum amount of redundancy and allows users to insert, modify, and…
A: Lets see the solution.
Q: If you assume that a relation has no duplicate data, how do you know there is always at least one…
A: We can always be sure that there is always at least one primary key. Consider the situation when…
Q: Any relation must have at least ONE Select one: a. Foreign Key b. Composite key c. Alternate key…
A: A relation basically is a table containing rows of some properties called columns. So there must be…
Q: The process of decomposing a relations into two relations is called: Select one: O Denormalization O…
A: Disclaimer: “Since you have asked multiple questions, we will solve the first question for you. If…
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- 1.State TRUE or FALSE. A logical representation of the database structure is obtained by carefully interpreting the interview results of a business. a.This is trueb.This is false 2.A generic name for an object, such as a person, a computer, or a location that you want to keep in a database is called ….. a.A keyb.An entityc.A constraintd.An entry23. Which of the following is a group of one or more attributes that uniquely identifies a row? a. Key b. Determinant c. Tuple d. RelationAnswer the following questions in a paragraph format. 1. What is a derived attribute? Give an example. 2. What are the advantages or disadvantages of storing or not storing a derived attribute?
- A)Which of the following are used to indicate cardinality symbols? a.WITHb.Pc.None of the aboved.Both A and B aboveB)State TRUE or FALSE. In a ternary relationship, an entity associates with itself. a.This is trueb.This is falseC)In database design, it is possible to give relationships names. a.This is trueb.This is falsejust answer true/false a]Disjointness means that every entity of a supertype must be an entity in one of the subtypes in the generalization hierarchy. b]Record is a set of more fields that describe a person, place or thing. c]Cardinality is the number of tuples in a relation. d]Referential integrity must have null values only.n a relational schema, relationships between relations (or tables) are created using _______. Group of choice: A. artificial keys B. foreign keys C. determinants D. superkeys E. candidate keys
- just answer true/false , fast pls -a]Weak entity is an entity that borrow all of its primary from another entity types. -b]You are not allowed to have identical attributes name in different entities. -c]An operational database is sometimes referred to as an enterprise database.33. A relational database developer refers to a record as a. a criteria b. a relation c. a tuple d. an attributeFill in the blank: A ____________________ is a structured collection of related data stored on a computermedium. A ____________________ attribute is an attribute whose value is different for each entityinstance. A ____________________ is an ER modeling construct depicting how entities are related. A ____________________ is a column (or a set of columns) whose value is unique for eachrow.