All of the following are algorithms to evaluate join, except: a. Nested loop       b. Index-nested loop c. Sort-merge         d. B+-tree Which level of Normalization should you get to on most Relational Database schemas: a. First               b. Second         c. Third      d. Fourth      e. Fifth

Q: A select operation in a relational database decreases the size of a table by deleting columns that…

A:

Q: II name(o dept_name ="Physics" (instructon)

A: In relational algebra expression, the SELECT operation (σ) is used to select a subset of the tuples…

Q: . database by graphically or by using query. 3. Create table in your database by graphically and by…

A: The database is an organized collection of structured records or data and these data are retrieved,…

Q: You are given the following database schema: Sailors(sid, sname, rating, age) Boats(bid, bname,…

A: Given Data : Number of pages in main memory = 9 Sailors : Tuples = 100000 pages = 1000  Sailors…

Q: Implement the following clauses on a database of your choice and produce results. (Write query and…

A: The BETWEEN operator is used to select the values of the queries within a given range. The JOIN rule…

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: oblem: implement database in MySQL for music(table: artist, album, track , played) and add multiple…

A: It is defined as an organized collection of structured information, or data, typically stored…

Q: 2. (a) Find the optimal join using a static algorithm and choose the best path to execute the…

A: The  Answer is

Q: Give an example of how (Tables) can be related through (Keys).

A: In Relational database, it contains many tables which consists of columns and follow some rules like…

Q: Create ERD or EERD of local school library with these requirements, and write relation schema…

A: answer is

Q: Since no particular student is affiliated with a number, disclosing the total of all financial…

A: Sensitive data Sensitive data is information that can not be made public. Data pertaining to the…

Q: Task1: Create Tables, indexes and constraints. At least one index (hash-based or tree-based) and one…

A: USE  SQLShасkDemоGОСREАTE  VIEW  EmрlоyeeFullInfоАSSELEСT  EMР.[BusinessEntityID]…

Q: Ques. Under what circumstances are composite primary keys appropriate?

A: The composite primary key is the combination of more than one primary key.

Q: R(A, B, С, D, E, F, G, (H, І, J, K, L)) А — В, С, D, Е, F, G H– I, J A, H → K, L . В — С, D A 6.…

A:

Q: Consider the following database schema. BOOK (BID, TITLE, GENRE, AUTHOR) BORROWS (RID, BID, DATE)…

A: Given database schema: -…

Q: Produce a resulting table with data after each of the following relational join operations has been…

A: (SELECT * FROM MemberListA) UNION ALL (SELECT * FROM MemberListB);   (SELECT * FROM MemberListB)…

Q: Explain the distinction between an inner and an outer join.

A: The join clause is a special keyword in SQL (Structured Query Language), which is used to combine…

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: You are given the following database schema: Sailors(sid, sname, rating, age) Boats(bid, bname,…

A: Given Data : Number of pages in main memory = 9 Sailors : Tuples = 100000 pages = 1000  Sailors…

Q: For executing a query, which specifies a range of values in the WHERE clause, among Ordered indexing…

A: - We need to talk about the indexing to use for getting data from WHERE clause.

Q: 16. There are 23, 765 number of relations on the set {a, b, c, d}that contain the pair (a, a)?

A: False.

Q: A table that contains a repeating group is a(n) unnormalized relation a O 1st NF b O normalized…

A: Lets see the solution.

Q: It may be advantageous to keep the join as a materialized view if a parallel data-store is used to…

A: materialized a view is a database object that contains the results of a query. For example, it may…

Q: Find one type-2 functional dependency in the grade table Table GRADE Student ID Student Name…

A: Functional DependencyA functional dependence occurs when two attributes have a relationship. Inside…

Q: Which of the following statements about JOIN in relational algebra is false? a. inner join only…

A: Option B is false: X join Y is not the same as Y join X

Q: In relational algebra, what does the operator P do? Select one: O a. Performs a join between two…

A: Functional dependency is the relation that exists between primary keys and non-key attributes…

Q: ) Create a trigger so that when user tries to update category table, new value won't take effect…

A: A)   DECLARECursor c1 is select table_name from user_tables; BEGINOPEN c1;FETCH c1 INTO tables c1…

Q: Give two examples of how null values could be inserted into a database.

A: Because the real value is either unknown or does not exist, nulls may be inserted into the database.

Q: It may be advantageous to keep the join as a materialized view if a parallel data-store is used to…

A: Introduction:   Consider storing the given two relations in a cloud data storage system.…

Q: Discuss if outer joins are implemented easily for more than two tables or not.

A: Given:

Q: the following relational schema of a database library (primary keys are underlined and foreign keys…

A: The SQL query of the given scenario can be written as: Select bookNumber, bookTitle From Book Inner…

Q: Study the relational schema: EMP(ID, Name, DeptID) DEPT(DeptID, DName, Loc) Which of the following…

A: Given: 1) Which of the following join conditions will correctly join the two tables? Emp.Name =…

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: "natural join" in a relational database takes two tables of lnformation and combines entries from…

A: C = [            {A38182818,Spring2021,Math230,01,Su,A38182818},…

Q: Study the relational schema: EMP(ID, Name, DeptID) DEPT(DeptID, DName, Loc) Which of the following…

A: ANSWER: a. Emp.DeptID = Dept.DeptID

Q: Question 36 options:   1)  A row, table, or an entire database   2)  A row, table, or an entire…

A: 1) On application level we can restrict ( by implementing locking mechanism) other user to make…

Q: What are the customer IDs and names of all customers, along with the order IDs for all the orders…

A: SQL (Structured Query Language) is designed primarily for managing data in a relational database…

Q: In handling foreign key violations, the option to reject if the row is referenced in another table…

A: a) Set Null: It is a foreign key which means that if a record in the parent table is deleted, then…

Q: Create LessonSchedule table with FK constraints in mysql database   Two tables are created: Horse…

A: The solution for the above given question is given below:

Q: Given the tables create table T (A int primary key, B int); create table U (C int primary key, A…

A: As mentioned: There are two tables. Table T and Table U Table T has A(P.K), B two columns. Table U…

Q: Grace hash join is usually the best algorithm for joins in which the join condition includes an…

A: Hello student Greetings Hope you are doing great. Thank You!!!

Q: ISBN(PK) Title Publisher Stock Price C Programming Database Systems 1123 Pearson 300 89 2111…

A: SQL statement screenshot: : SQL statement:  SELECT * FROM book WHERE title LIKE 'A%'; Output:

Q: The following PEOPLE relation keeps information about people such as their social security number,…

A: Answer to the above question is in step2.

Q: In a relational database, a select operation reduces the size of a table by removing columns that…

A: Definition: Data points that are connected to one another are stored and accessible in a relational…

SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.