Write a SELECT statement that selects all of the columns for the catalog view that returns information about foreign keys

Issue a SELECT statement that displays NEXTVAL for MY_FIRST_SEQ three times. Because the value isn’t being placed in a table, use the DUAL table in the FROM clause of the SELECT statement. What causes the error on the third SELECT?(refer to the tables in the JustLee Books database).

Which function does the PRIMARY KEY clause perform in table creation? It ensures that’s non-NULL values can act as unique keys. It ensures that non-NULL values can as candidate keys. It ensures that each value in row is unique. It ensures that each value in the column is unique

A_Create in PL/SQL a stored procedure called 'Del_Details' to delete the record oforderedProduct table for which it receives as input the order number (orderNO) and theproduct number (productNO). B_ Create in PL/SQL a stored Function called 'productPerOrder' to return the number ofproducts placed for any order its number is given as input.C_ Write a Trigger called ‘changeCustomer_Category’. This trigger should be invoked beforeany update of customer balance in customer table. Its job is to modify the category of acustomer from B2 to B1 and from C2 to C1 when a customer's balance status drops belowa certain threshold (-10000).

15. Open the AttendeeFirstName query in Design View and add criteria to select only those records where the FirstName field value begins with Lau followed by any other letters. Save the changes to the query. Open the query in Datasheet View, confirm that two records appear in the query results, and then close it.

You will be using the Colonial Adventure Tours database. Find the trip name of all reservations for hiking trips and sort the results by trip name in ascending order.

1. Create a SELECT statement that returns the order number and date for all records in the ORDERS table. Using an inner join, include the customer name and email address associated with each order.

For this problem create a (temporary) table called instructor_course_nums. Write a procedure that accepts an instructor ID as input. The procedure calculates the total number of course sections taught by that instructor, and adds a tuple to the temporary table consisting of the instructors ID number, name, and total courses taught - call these attributes: ID, name, and tot_courses. If the instructor already has an entry in the table,then the procedure makes sure the total number of courses taught in the temporary table is up-to-date. You must name your procedure: Written in PostgreSQL

I need help with an UPDATE statement that will change the CUST_EMAIL value to "unknown" for records in the CUSTOMERS table that have null values for the cust_email field

Which type of constraint can be used to make certain the category for a book is included when a new book is added to inventory? ( refer to the tables in the JustLee Books database).