What is the primary key of the WorkHours table? Indicate the redundant field in the Employees table.

Q: Note that primary keys are in BOLD. Note also that attributes with the same name in different tables…

A: Here have to determine about SQL statement of given problem statement.

Q: Below is the answer that I have but it is incorrect can anyone help?     select PROJ_NUM,…

A: Here you have simply used the ROUND(value,2) function. This will simply round the value to 2 places…

Q: Write a query to create a temporary table.

A: Question. Write a query to create a temporary table. Answer. Temporary table: A temporary table…

Q: The Car Maintenance team also wants to store the actual maintenance operations in the database. The…

A: DELETE CASCADE: - When we constitute a foreign key using this option, it deletes the referencing…

Q: One row in the PAT_ENC table represents one patient encounter. One row in the ORDER_MED table…

A: A tablе in a databasе is a collеction of rеlatеd data. It is thе basic building block of a…

Q: The number of times the table structure has been altered by SQL queries. Which major changes need to…

A: Yes, by tracking modifications in the history table and using SQL commands, you can keep a record of…

Q: Change to use the database frozenfood Alter table customerOrder add column total as data type…

A: Note: As per our guidelines we can able to solve only three questions. So, please re-post the…

Q: If something is transitive, what does that entail? What is the rule for converting tables from the…

A: Answer is

Q: What is the difference between a UNIQUE and a PRIMARY KEY constraint? (See the tables in the JustLee…

A: Introduction: When creating a table, a primary key is used to identify each row in the table, while…

Q: How many rows are returned in a Cartesian join between one table having 5 records and a second table…

A: Cartesian Join: In relational databases, the Cartesian Join between two tables refers to as the join…

Q: Note that primary keys are in BOLD. Note also that attributes with the same name in different tables…

A: Solution:   2.3)   Treatment table before increment by 2.5 % in costOfTreatment :

Q: Task 18: List the item ID, description, unit price, and category for each item that has a unit price…

A: Task 18: ALL Operator: The operator is used with WHERE or HAVING clause. If ALL operator is used in…

Q: use the following picture to answer the question below Assuming Order table already exist, add a…

A: To add a Foreign Key Constraint to an already existing table, the below query syntax is used. ALTER…

Q: This is the problem: (from Database Systems Book, 13th ed) Write a query to display the author last…

A: Create table AUTHORS_OF_BOOKS using the below query: SQL QUERY: /* Create a table called NAMES…

Q: Given the following query:SELECT title, giftFROM books CROSS JOIN promotion;Which of the following…

A: Answer of the above question:

Q: My SQL WORKBENCH **Please note that you may actually use as many tables as you need. You are not…

A: To display the addresses of all the departments with location information: SELECT l.LOCATION_ID,…

Q: SELECT BRAND_NAME, BRAND_TYPE, round(AVERAGE,2) AS 'Average Price', UnitsSold FROM (LGBRAND INNER…

A: Actually, SQL stands for structured query language.

Q: Question 6  List classroom ID, building name, class ID and class description. Use a LEFT JOIN to…

A: Here , i create one database and then In table i inserted some value by own.. then writing…

Q: Explain the relationship between EXISTS and correlated subqueries.

A: Given: Explain the relationship between EXISTS and correlated subqueries.

Q: The Driver Relationship team wants to ensure that the all driving license IDs in the active drivers…

A: This is a alter command in mysql to add check in already created table.

Multiple Table

In a database, a table is used to store data in the form of rows and columns. Rows are aligned horizontally and identified by one or more values in a specific column. Columns are vertically aligned and identified by a unique column name.