What is a foreign key mcq

What is a foreign key answer?

A foreign key is a column or group of columns in a relational database table that provides a link between data in two tables. It acts as a cross-reference between tables because it references the primary key of another table, thereby establishing a link between them.

What is a foreign key Mcq Examveda?

a column containing the primary key of another table.

What is a super key Mcq?

Super Key: A superkey is a set of one or more columns (attributes) to uniquely identify rows in a table.

What is key in Mcq?

Keys and Splines MCQ Question 5 Detailed Solution

A key is a piece of mild steel inserted between the shaft and hub or boss of the pulley to connect these together in order to prevent relative motion between them. It is always inserted parallel to the axis of the shaft. Keys are used as temporary fastenings.

What is a foreign key column?

A foreign key is a column (or combination of columns) in a table whose values must match values of a column in some other table. FOREIGN KEY constraints enforce referential integrity, which essentially says that if column value A refers to column value B, then column value B must exist.

Which of the following is foreign key?

A FOREIGN KEY is a field (or collection of fields) in one table, that refers to the PRIMARY KEY in another table. The table with the foreign key is called the child table, and the table with the primary key is called the referenced or parent table.

Which of the following keys are known only to the owner Mcq?

Which of the following keys are known only to the owner? Explanation: public keys, which may be disseminated widely, and private keys, which are known only to the owner. 3.

What is candidate key Mcq?

Candidate Key: Candidate keys are those minimum set of attributes that can uniquely identify a tuple/record/row in a relation. Primary Key: Primary keys are those minimum set of non -null attributes (means attributes can not contain null value) that can uniquely identify a tuple/record/row in a relation.

What is common name of primary key and alternate key?

A super key is a combine form of Primary Key, Alternate key and Unique key and Primary Key, Unique Key and Alternate Key are subset of super key.

What is a private key Mcq?

A private key, also known as a secret key, is a variable in cryptography that is used with an algorithm to encrypt and decrypt code. Secret keys are only shared with the key’s generator, making it highly secure. Private keys play an important role in symmetric cryptography, asymmetric cryptography and cryptocurrencies.

How is secret key different from public key?

In secret key encryption, a single shared key is used to encrypt and decrypt the message, while in public-key encryption, different two keys are used, both related to each other by a complex mathematical process. Therefore, we can say that encryption and decryption take more time in public-key encryption.

What is PGP stands for MCQ?

Pretty Good Privacy

Explanation: PGP stands for Pretty Good Privacy.

What is an example for public key algorithm Mcq?

Discussion ForumQue……………. is an example for public key algorithm.b.DESc.IREAd.RC5Answer:RSA

What is Botnet Mcq?

This set of Cyber Security Multiple Choice Questions & Answers (MCQs) focuses on “Attack Vectors – Botnets”. … Explanation: A botnet consists of at least one bot server or controller and one or more client-bots. Botnets are managed by bot-herders. The exact term is bot herders.

What do you mean by key pairs Mcq?

A. Key-pairs are secure login information for your instances/virtual machines. … To connect to the instances we use key-pairs that contain a private-key.

What is firewall Mcq?

A firewall is a program that encrypts all the programs that access the Internet. A firewall is a program that keeps other programs from using the network. Firewalls are interrupts that automatically disconnect from the internet when a threat appears.

Is an example for public key algorithm *?

A: Large integers form the basis of public key algorithms such as RSA. ElGamal, and Elliptic Curve Cryptography. These algorithms require large numbers to make attacks such as factoring and discrete logarithms ineffective.

Is a password recovery and auditing tool Mcq?

________ is a password recovery and auditing tool. Explanation: LC4 which was previously known as L0phtCrack is a password auditing and recovery tool; used for testing strength of a password and also helps in recovering lost Microsoft Windows passwords. 15. L0phtCrack is formerly known as LC3.

What are TLS and SSL Mcq?

Explanation: IP/IPSec is the Network level, SSL or TLS is the Transport Level, Kerberos and S/MIME are the Application level.

What are hybrid attacks Mcq?

An attempt to break passwords using a combination of characters, numbers, and symbols. … An attempt to break passwords by replacing characters with numbers and symbols. Correct Answer – B. Explanation – Hybrid attacks do break passwords that are created with replaced characters of dictionary type words.

What is spyware Mcq?

Explanation: Spyware is preventable software that spy on user’s activities, stealing internet usage data & sensitive information of that user. Spyware is categorized as a sub-type of malware intended to spy & gain access to or damage the system data, without your acquaintance.

What does TLS stand for?

Transport Layer Security

Transport Layer Security (TLS) encrypts data sent over the Internet to ensure that eavesdroppers and hackers are unable to see what you transmit which is particularly useful for private and sensitive information such as passwords, credit card numbers, and personal correspondence.

What is the difference between SSL and TLS Mcq?

SSL has the “No certificate” alert message. TLS protocol removes the alert message and replaces it with several other alert messages. In SSL (Secure Socket Layer), the Message digest is used to create a master secret. In TLS (Transport Layer Security), Pseudo-random function is used to create a master secret.