Why is it important to write to a log before changing the database values?

Q: Q1\ if your database has the nformation in figure below make the database easy to update and…

A: The table is not normalized as some cells are holding multiple values.  Break the tables to…

Q: How can a key unique index be created?

A: The CREATE UNIQUE INDEX command forms a exclusive index on a table  where no duplicate values…

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

A:

Q: A select procedure in a relational database can shrink a table's size by deleting columns that don't…

A: Definition: In a relational database, data is kept in one or more tables (or "relations") of columns…

Q: Put your code in the main method given below. [Hint: SQL will return all accounts from the…

A: table name AccountingDB   display all account

Q: Cmployee employee_id INT last name VARCHAR(25) first name VARCHAR(15) email VARCHAR(45) •dept code…

A: Keys are used to assign an identity to the attributes present in a relation.

Q: Defintion: What is the purpose of a database audit log? SQL Server uses Extended Events in a way…

A: Introduction: Defintion: What is the purpose of a database audit log? SQL Server uses Extended…

Q: Is a NULL value in a database the same as a blank space or a value of zero?

A: Intro A database is a collection of information that has been organized to allow for simple access,…

Q: You are required to create the following tables in a database named STUDENT_REGISTRATIONS. Ensure…

A: create the following tables in a database named STUDENT_REGISTRATIONS.:-

Q: In a relational database, a select operation is used to delete columns that satisfy specific…

A: The select operation is basically an operation which searches data in the table and acquire or…

Q: A trigger or a process is an option available to you now that you've been employed to work on a…

A: answer is

Q: if (number>=capacity) enlarge_database (number+1);

A: In a database, whenever a new object is added, the following statement is executed to ensure that…

Q: Is this statement true or false? The term "null" refers to a column in a database table that does…

A: Given: Is this statement correct or incorrect? The term "null" refers to a column in a database…

Q: List two reasons why null values might be introduced into the database.

A: Introducing null values into the database: The two reasons for introducing null values into the…

Q: values

A: Dear Student, Hashing refers to the process of converting object data into a representative integer…

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: List the names of any pair of boats that have the same type. For example, one pair would be Anderson…

A: The Question is of DBMS SQL query in which we have to find out the solution by using a query.  A…

Q: True/False: Rollback refers to the reversing of database changes

A: The answer :

Q: In terms of SQL, why can indexes cause updates and deletes to take longer?

A: SQL is used to store the data. It is a relational database as it stores data in a schema. You can…

Q: An attacker who adds commands to a database query has likely used A. SQL injection B. command…

A: Answer: Right option is SQL injection.

Q: The code shown below is designed to increment through each row in a database table. Correct the…

A: We have to increment through each row in a database table, for that we can use any of the following…

Q: IN MYSQL write the command. Using the UML designed create all the necessary tables for your…

A: Necessary tables for given UML.

Q: A select operation in a relational database is used to cut down on the size of a table by deleting…

A: Given: In a relational database, a select operation is used to reduce the size of a table by…

Q: Why is it a good idea for the DBMS to update the catalog automatically when a change is made in the…

A: Each database carries a set of system tables, which are special tables that the system uses to…

Q: When it comes to database systems, tables are a great option. Is it possible for you to write a few…

A: Answer: A null value in a relational database is involved when the value in a column is obscure or…

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

A: The question is about relational databases and determining whether or not a statement is true or…

Q: Why does Access require that you enter a descriptive name when the database is created?

A: - We need to talk about the requirements of descriptive name for access when the database is…

Q: Referential integrity of a database might be compromised, which would have serious repercussions.…

A: The most valuable asset for every business is quality data. In database design, the phrase…

Q: From the database scheme write the query(all tables are empty) 1) Insert your name and your phone…

A: The given diagram is a logical model for the rent of apartments where the apartment has a building…

Q: In a relational database, a select operation is used to minimise the size of a table by eliminating…

A: The answer is

Q: Although Null values are problematic in databases, it cannot be avoided in some cases. Describe how…

A: Actually, the answer has given below:

Q: When dealing with missing field values in a database, what are the three actions to take?

A: Three actions that can be taken to dealing with missing field values in a database

Q: is a field in a database table that uniquely identifies a record in that table A Foreign key

A: C   Primary Key

Q: Describe the use of null values in a database

A: Introduction: A NULL value is a particular marker used in SQL to indicate that a data value does not…

Q: What happens if your database's referential integrity is not enforced? Are there any common…

A: Answer: Enabling referential integrity for a table connection is a great approach to do so.After a…

Q: True or False If a column in a database table contains no data, it is said to be null.

A: Explanation: While designing a table, the null value property for columns can be specified by…

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

A: The question is on relational databases and finding if the statement is true or false.

Q: A key for this database is (Departure Time}. Enter a different key for the database.

A: The given is a sample data set which shows the details about the departure of the Airline flights on…

Q: An attacker who adds commands to a database query has likely used

A: In this question we will understand about the database injection of queries form the hacker into the…

Q: What is the procedure for entering information about a user into a database?

A: Databases are collections of structured data kept electronically on a computer system that are…

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

A: According to the Question below the Solution:

Q: Q. _________ is the standard way to separate each SQL statement in database systems that allow more…

A: Q. _________ is the standard way to separate each SQL statement in database systems that allow more…

Q: When identifying functional dependencies, the sequence/ordering of columns in a database table is…

A: As per our policy, we can solve one question at a time if you need the second answer please post it…

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…