List five properties of relations.
Q: What are three indications that a surrogate key should be constructed for the primary key of a…
A: Surrogate key is unique key and also called as synthetic primary key. Surrogate key holds anonymous…
Q: Use normalization to decompose a relation with anomalies into well-structured relations?
A: Yes, Normalization are used to decompose a relationship with anamolies into a well structured…
Q: Provide examples of relations that could have more than one candidate key.
A: Candidate key A candidate key is recognized as a "set of attributes" (or fields) with the ability…
Q: What is well-structured relation? Why are well-structured relations important in logical database…
A: To be determine: What is well-structured relation? Why are well-structured relations important in…
Q: What are the conditions under which an attribute of a relation may have a changeable length?
A: Introduction: An attribute is defined as a trait or characteristic found in a person, a place, or an…
Q: Map the ER diagram below to a set of relations (i.e., relational schema). Underline the primary key…
A: While converting an ER diagram to relational schema, we need to take care of relationship. For many…
Q: The use of composite attributes are avoided in relation schema when the relation schema conforms to…
A: The use of composite attributes, are avoided in a relation schema when it is said to be in First…
Q: In mathematical term Table is referred as a. Relation b. Attribute c. Tuple d. Domain
A: In mathematical term Table is referred as a. Relation b. Attribute c. Tuple d. Domain
Q: A relation cannot have: Multi-values attributes Several super-keys O Composite attributes Attributes…
A: Answer:
Q: Justify how the main key of a relation is connected to all of the qualities of the relationship in…
A: Introduction: A primary key is a database characteristic that uniquely identifies a record. It's…
Q: Computer Science: Why normalized relations may not compromise an efficient physical implementation…
A: Inconsistently stored data can create number of problems. A poorly designed database may provide…
Q: Can instances of a relation (sample data)prove the existence of a functional dependency? Why or why…
A: Lets see the solution.
Q: How relation listening important?
A: The relationship that is built between people when they communicate is the focus of relational…
Q: What is the reason for normalised relations may not compromise an efficient physical implementation…
A: Normalized relations may also not jeopardize the efficiency of the simple geometric structure, as…
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: Computer science What is the relationship between the primary key of a relation and the…
A: The Answer is in step2
Q: RI E2 E1 R4 R2 R5 E4 R3 E3 hat is the minimum number of relations required for the above E-R…
A: According to the question: Given, An ER diagram. We have to calculate the minimum number of relation…
Q: Demonstrate that if a relation contains no property that is functionally determined by all of the…
A: Introduction Show that if a relation has no attribute that is functionally determined by all the…
Q: Describe the differences in meaning between the terms relation and relation schema.
A: A relation schema is the combination of list of attributes and their related domain types. An…
Q: 'What's an unnormalized relationship? Is it a relationship according to the term relation…
A: Unnormalized relationship
Q: Which is the process of breaking a relation into multiple relations: a. Functional dependency b.…
A: This mcq is related to RDBMS.
Q: Define the term Well-structured relation?
A: Well-structured relation • A well-structured relation is defined as the phenomenon where the…
Q: What is PrOPertieS Of relAtiOnS?
A: Given: Properties of Relation
Q: How can we define relation? Identify the characteristics that make up a relation.
A: The table in the relational database or the relationships created between the same tables using…
Q: Indicate all the functional dependencies and the normal form for each relation
A: The functional dependencies are the unique relationships between the attributes. For the table given…
Q: Mapping: Create relational schemas for the ER diagram given below. Indicate clearly the prin and…
A: Q
Q: When it comes to relationships, what is the connection between the main key of a relation and the…
A: The connection between the main key of a relation and the functional dependencies among all…
Q: What is a well-structured relation?
A: Answer: Well-structured relation Definition: A well-structured relation is defined as the…
Q: Following relation schema exists : EMPLOYEE (EMP_ID, EMP_NAME, DEPT, GRADE, SALARY, AGE, ADDRESS).…
A: Answer: Given EMPLOYEE (EMP_ID, EMP_NAME, DEPT, GRADE, SALARY, AGE, ADDRESS). Functional dependency…
Q: Computer Science: Why normalized relations may not impair the efficiency of a physical…
A: The answer :
Q: Summarize six important properties of relations
A: Given: Summarize six important properties of relations
Q: Explain the usage of attributes and the generic name for attribute in the relationship mode
A: I have provided answer in step2
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: Define the term Relation?
A: Answer: A relation between two sets is a collection of ordered pairs containing one object from…
Q: Question 10. Consider the relation R (ABCDE) and functional dependencies set {A → B, B → C, C → D, D…
A: In this question 10, we are given a relation R and set of functional dependencies. We are asked the…
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: define UNIQUE and NON-UNIQUE indexes for relations.
A: Unique indexes are indexes that help maintain data integrity by ensuring that no two rows of data in…
Q: Databases: Give six important properties of relations.
A: The six important properties of relations are as follows: Values are atomic. Column values are of…
Q: Given the relation below named Student_Registration , answer the following questions. S_id…
A: Relational Schema: A relational schema in a database gives a outline of how data is organized in a…
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: Explanation of three circumstances in which a surrogate key should be generated for the main key of…
A: Surrogate key: It is a key that does not have any contextual meaning but is used to identify the…
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: Explain the use of the terms relation, tuple, and attribute.
A: Answer: In the language of database historians, term relation is used to denote a Table. Each…
Q: Define the term primary key in terms of functional dependencies
A: Functional Dependency (FD) is a constraint that determines the relation of one attribute to another…
Q: 14. A _____ is a property of the entire relation, rather than of the individual tuples in which each…
A: Python is an interpreted, object-oriented, high-level programming language with dynamic semantics.…
Q: What is the link between the main key of a relation and the functional connections between all of…
A: Introduction: Primary and foreign keys are the cornerstones of relational database theory. Primary…
Q: The attributes of the entities are represented as in the Relational Data Model.
A: Attributes in database An attribute describes the entity properties in the relational model. Each…
Q: A hybrid merge-join strategy should be developed for the circumstance when both relations are not…
A: Merged in joins: Merge Join is one of four operators that combines data from two input streams into…
List five properties of relations.
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- What is the connection between a relation's primary key and the functional relationships between all of its attributes?Briefly describe four problems that may arise when merging relationsHow does the primary key of a relation relate to the interdependencies of its characteristics from a functional standpoint?