Unit 3 TEST CIS 2010 || 100% CORRECT SOLUTIONS!!
entity correct answers also referred to as a table; stores data about a person, place, thing,
transaction, or event
attributes correct answers (also called columns or fields) are the data elements associated
with an entity
record correct answers a collection of related data elements. It occupies one row in its
respective table
metadata correct answers data about data. examples: for an image, it includes size, resolution,
date created
Advantages of a relational database correct answers increased flexibility, increased scalability
and performance, reduced information redundancy, increased data integrity, increased data
security
data element (data field) correct answers The smallest or basic unit of data
data redundancy correct answers the duplication of data, or the storage of the same data in
multiple places
data base correct answers Maintains data about various types of objects (inventory),events
(transactions), people (employees), and places (warehouses) as well as data about data
(metadata)
Foreign Key correct answers A primary key of one table that appears as an attribute in
another table and acts to provide a logical relationship between the two tables
primary key correct answers A field (or group of fields) that uniquely identifies a given entity
in a table
identity management correct answers a broad administrative area that deals with identifying
individuals in a system (such as a country, a network, or an enterprise) and controlling their
access to resources within that system by associating user rights and restrictions with the
established identity
integrity constraints correct answers rules that help ensure the quality of information
relational database model correct answers stores information in the form of logically related
two-dimensional tables
Structured Query Language (SQL) correct answers asks users to write lines of code to answer
questions against a database
blockchain correct answers a distributed ledger that provides a way for information to be
recorded and shared by a community
, what are the component technologies of blockchain? correct answers Digital ledger, hash and
digital signature, miners, decentralized
Digital Ledger correct answers A bookkeeping list of assets (money, property, ideas...),
identified ownership, and transactions that record the transfer of ownership among
participants
Hash and Digital Signature correct answers Computer Science and advanced mathematics (in
the form of cryptographic hash functions) protect the blockchain's integrity and anonymity.
Miners correct answers Transactions are authenticated by a network of (blank) who complete
complex mathematical problems. When all arrive at the same unique solution, the transaction
is verified and recorded as a new 'block'. New transaction blocks are added to the digital
ledger in a chained fashion, forming a 'blockchain'. The distribution of (blank) means that the
system cannot be hacked by a single source. If anyone tries to tamper with one ledger, all of
the nodes will disagree on the integrity of that ledger and will refuse to incorporate the
transaction into the blockchain
Decentralized correct answers Each node in the participating computer network has a full
copy of the digital ledger. This avoids the need to have a centralized database managed by a
trusted party. Transactions are broadcast to the network. Network nodes can validate
transactions and add them to their copy, then broadcast those additions to other nodes.
Bitcoin correct answers a type of digital currency in which encryption techniques are used to
regulate the generation of units of currency and verify the transfer of funds, operating
independently of a central bank.
Crytocurrency correct answers a digital currency in which transactions are verified and
records maintained by a decentralized system using cryptography, rather than by a centralized
authority.
blocks correct answers what blockchains are formed by
distributed computing correct answers processes and manages algorithms across many
machines in a computing environment
double-spend correct answers occurs when someone alters a blockchain network and inserts a
special one that allows them to reacquire a cryptocurrency
Immutability correct answers the ability for a blockchain ledger to remain a permanent,
indelible, and unalterable history of transactions
Proof of Work correct answers a requirement to define an expensive computer calculation,
also called mining, that needs to be performed in order to create a new group of trustless
transactions (blocks) on the distributed ledger or blockchain
Algorithm correct answers a set of instructions (codes) that complete a task
Code correct answers instructions for a computer
entity correct answers also referred to as a table; stores data about a person, place, thing,
transaction, or event
attributes correct answers (also called columns or fields) are the data elements associated
with an entity
record correct answers a collection of related data elements. It occupies one row in its
respective table
metadata correct answers data about data. examples: for an image, it includes size, resolution,
date created
Advantages of a relational database correct answers increased flexibility, increased scalability
and performance, reduced information redundancy, increased data integrity, increased data
security
data element (data field) correct answers The smallest or basic unit of data
data redundancy correct answers the duplication of data, or the storage of the same data in
multiple places
data base correct answers Maintains data about various types of objects (inventory),events
(transactions), people (employees), and places (warehouses) as well as data about data
(metadata)
Foreign Key correct answers A primary key of one table that appears as an attribute in
another table and acts to provide a logical relationship between the two tables
primary key correct answers A field (or group of fields) that uniquely identifies a given entity
in a table
identity management correct answers a broad administrative area that deals with identifying
individuals in a system (such as a country, a network, or an enterprise) and controlling their
access to resources within that system by associating user rights and restrictions with the
established identity
integrity constraints correct answers rules that help ensure the quality of information
relational database model correct answers stores information in the form of logically related
two-dimensional tables
Structured Query Language (SQL) correct answers asks users to write lines of code to answer
questions against a database
blockchain correct answers a distributed ledger that provides a way for information to be
recorded and shared by a community
, what are the component technologies of blockchain? correct answers Digital ledger, hash and
digital signature, miners, decentralized
Digital Ledger correct answers A bookkeeping list of assets (money, property, ideas...),
identified ownership, and transactions that record the transfer of ownership among
participants
Hash and Digital Signature correct answers Computer Science and advanced mathematics (in
the form of cryptographic hash functions) protect the blockchain's integrity and anonymity.
Miners correct answers Transactions are authenticated by a network of (blank) who complete
complex mathematical problems. When all arrive at the same unique solution, the transaction
is verified and recorded as a new 'block'. New transaction blocks are added to the digital
ledger in a chained fashion, forming a 'blockchain'. The distribution of (blank) means that the
system cannot be hacked by a single source. If anyone tries to tamper with one ledger, all of
the nodes will disagree on the integrity of that ledger and will refuse to incorporate the
transaction into the blockchain
Decentralized correct answers Each node in the participating computer network has a full
copy of the digital ledger. This avoids the need to have a centralized database managed by a
trusted party. Transactions are broadcast to the network. Network nodes can validate
transactions and add them to their copy, then broadcast those additions to other nodes.
Bitcoin correct answers a type of digital currency in which encryption techniques are used to
regulate the generation of units of currency and verify the transfer of funds, operating
independently of a central bank.
Crytocurrency correct answers a digital currency in which transactions are verified and
records maintained by a decentralized system using cryptography, rather than by a centralized
authority.
blocks correct answers what blockchains are formed by
distributed computing correct answers processes and manages algorithms across many
machines in a computing environment
double-spend correct answers occurs when someone alters a blockchain network and inserts a
special one that allows them to reacquire a cryptocurrency
Immutability correct answers the ability for a blockchain ledger to remain a permanent,
indelible, and unalterable history of transactions
Proof of Work correct answers a requirement to define an expensive computer calculation,
also called mining, that needs to be performed in order to create a new group of trustless
transactions (blocks) on the distributed ledger or blockchain
Algorithm correct answers a set of instructions (codes) that complete a task
Code correct answers instructions for a computer
