How many minimal keys this relation has? A B C DE F G 1 4 4 4 2 4 3 2 5 4 4- 2. 4- 2. 3. 4. 2. 3. 4- 3. 2. 1,

Q: For the ER diagram below, which of these statements is correct? Check all that apply. A B There are…

A: answer :- option B) all rows in A are linked to at most one row in B.

Q: Given the relation U below, use ordered pair notation to express the relation U o U. U o U = { Ex:…

A: To express the relation UoU (composition of relations U and U), find all pairs (x, y) such that…

Q: 3. Suppose the relation R1(A,B) and R2(B,C,D) have the following tuples: A 1 7 2 4 9 B A T G C T B…

A: A theta join connects tables based on a relationship other than the equality of two columns. A theta…

Q: This article describes three situations when using a surrogate key instead of the connection key is…

A: A surrogate key is a fictitious primary key used to uniquely identify a record in a database table.…

Q: 14. What is a self-balancing binary search tree, and why is it important?

A: Binary Search Tree  :  is a binary tree with following property->at every node n : all node's…

Q: Database: theatre(theatre_name[pk], City, Phone, Owner_SSN[pk, fk]) movie(movie_name[pk], Genre,…

A: SELECT Name, Gender FROM viewer WHERE Fav_Movie <>(SELECT movie FROM likes);

Q: 3. R is a binary relation over N, the set of natural integers. (x, y) € R iff x mod 7 = y mod 7. R…

A: Binary Relation:A binary relation is a mathematical concept that defines a relationship between two…

Q: Select the following relations on that are transitive. {(a,b) a²> b} {(a, b) | a²b² (mod 7)}…

A:

Q: Given the relations U and S below, use ordered pair notation to express the relation So U. a b b

A: To express the relation SoU (composition of relations S and U), find all pairs (x, y) such that…

Q: Python Question Consider two lists: seq1 = [1,2,3,4,5,6] seq2 = [1,1,2,2,3,3,4,4,5,5,6,6]…

A: I have given explanation of above answer: See below step.

Q: Sorry but I don't understand anything with your explication , can you please read the text and give…

A: This is not the correct solution as mentioned in the problem statement.   Here is the WRITTEN…

Q: and one extra: relational composition which generalizes composition of functions a (RoS) c ::= 3b e…

A:

Q: b) Express the following relation using a set-builder notation R = {(1, 2), (2, 6), (3, 9), (4, 16),…

A: Set-builder notation is a mathematical notation for describing a set of representations.

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: elp

A: help plz i will rate you  discrete structure

Q: Consider the following Relation instance of Students: ID firstNamelastName GPA Address 123 Albertson…

A: Given: What will be the result of given SQL query? SELECT ID,firstName FROM Students WHERE…

Q: List the advantages of 3NF over BCNF     Can always preserve functional dependencies     Ensures…

A: The correct answer to this question is option a) can always preserve functional dependencies.

Q: DB_Design:GA7.5. 3NF Decomposition 2 Consider the functional dependencies on R(A,B,C,D,E,F):…

A: Database normalization is a crucial concept in the design and organization of relational databases.…

Q: How to normalise this realtion From 1NF to 3NF Employee( em_id,name, school_No, Name, Phone,…

A: To normalize the given relation from 1NF to 3NF, we need to eliminate any transitive dependencies,…

Q: Given the relations U and T below, use ordered pair notation to express the relation To U. ToU =…

A: To express the composition of relations T and U (T o U) in ordered pair notation, we need to…

Q: Let R be the relation on A = {1,2,3,4,5} where R = {(1,1),(1,3),(1,4),(2,2),(3,1),(3,3),(3,4),…

A: Here is the solution which is mentioned below:

Q: Assignment: Which of the following links are equivalent/inequivalent? Where links are inequivalent,…

A: Which of the following links are equivalent/inequivalent ? what links are inequivalent .what is the…

Q: Given the relation T below, use ordered pair notation to express the relation To T. ToT { Ex: (a,…

A: This question explores the concept of relation composition in mathematics. Specifically, it asks you…

Intermediate SQL Concepts

A query is a request for data or information from one or more database tables. This information could be presented in the form of pictorials, graphs, or complicated findings which helps in easy interpretation. Structured Query Language (SQL) is the most widely used programming language for retrieving and organizing data from relational databases. Collection of tables with rows and columns is referred to as a database. SQL is the language of databases. It makes it easier to extract specific data from databases, which can then be used for analysis.