Race.RaceDate is not nullable Questions: Question 10 What constraints would the following command violate? There may be more than one or none. The changes should be taken individually on the data shown above and not as a result of previous problems. Remove RaceType record with rtypeid equal to 1. Entity Integrity O Referential Integrity O Key O Null Domain O None

Race.RaceDate is not nullable Questions: Question 10 What constraints would the following command violate? There may be more than one or none. The changes should be taken individually on the data shown above and not as a result of previous problems. Remove RaceType record with rtypeid equal to 1. Entity Integrity O Referential Integrity O Key O Null Domain O None

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Task 5: The Developers team also wants you to ensure that emails are converted to lowercase after an update operation. Currently, new insertions are guaranteed to have lowercase emails, but there is no such guarantee for legacy emails. Therefore, the team wants to ensure that emails are being retained in a lowercase irrespective of any changes in the database. Create a new TRIGGER called email_update for the USERS table that runs before an UPDATE operation. Task: Create a TRIGGER to run on the USERS table before any UPDATE operation. (SQL Database Test): Create a TRIGGER before any UPDATE operations on the USERS table
Create a CRUD API to manage recipes. Design the database and create your createDB.sql file. Seed your database with some initial records. Your application should store these recipe fields: id name ingredient_1 ingredient_2 ingredient_3 recipe_author_first_name recipe_author_last_name recipe_category_name Follow RESTful conventions to set up the five standard routes for a CRUD api. Make sure your API responds appropriately to various situations: Errors Invalid requests Etc.
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Open the Missing Addresses query in Design view. Add a new column to determine if a customer does not have an address on file. If the customer’s Address is null, it should display Missing. If not, it should display nothing. Name the column AddressPresent. Add criteria of Missing to the column you just created, so only the customers missing an address display. Move the AddressPresent field so it appears between PhoneNumber and Address. Run the query. Ensure only customers with null Address fields display. Save and close the query.
The Developers team also wants you to ensure that emails are converted to lowercase after an update operation. Currently, new insertions are guaranteed to have lowercase emails, but there is no such guarantee for legacy emails. Therefore, the team wants to ensure that emails are being retained in a lowercase irrespective of any changes in the database. Create a new TRIGGER called email_update for the USERS table that runs before an UPDATE operation. Task Create a TRIGGER to run on the USERS table before any UPDATE operation.
What Is the Difference Between Triggers and Rules?
Use phpmyadmin to create a MySQL database called “library” that contains the following tables: Author Field name Data type Constraint AuthorID Integer, auto-increment Primary key Name Up to 40 characters Gender Either ‘male’ or ‘female’ Email Up to 20 characters Book Field name Data type Constraint BookID Integer, auto-increment Primary key Title Up to 50 characters Price Double Publish Field name Data type Constraint PubID Integer, auto-increment Primary key AuthorID Integer, auto-increment Foreign key BookID Integer, auto-increment Foreign key PubDate DATE Insert 2 records in the table Author, 2 records in the table Book and insert their corresponding records in the table Publish
Create a new table called Funding that at present will not have any referential integrity. The table should have an automatically generated unique id every time a record is inserted into the new table. The attributes the table must contain are funding_id, funder and funding amount. In your solution provide an example of the insertstatement.