an attribute that uniquely identifies an entity and consists of a composite attribute is called a(n): identifying attribute composite identifier composite attribute relationship identifier
Answers
A composite attribute that uniquely identifies an entity is called a composite identifier.
In a database, an attribute is a characteristic or property of an entity. A composite attribute is one that consists of multiple sub-attributes. A composite identifier is a combination of two or more attributes that together uniquely identify an entity.
For example, let's consider a database of students. Each student has attributes such as student ID, name, and date of birth. The student ID alone may not be sufficient to uniquely identify a student, as there could be multiple students with the same ID. However, if we combine the student ID and the date of birth, it becomes a composite identifier that can uniquely identify each student.
Composite identifiers are useful when a single attribute cannot guarantee uniqueness, but a combination of attributes can. They ensure that each entity in a database can be uniquely identified, allowing for efficient data retrieval and manipulation.
In summary, an attribute that uniquely identifies an entity and consists of a composite attribute is called a composite identifier.
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Related Questions
best definition of wind
Answers
Answer: Wind is basically air blowing at you but...
The best way for me to explain what wind is:
Wind is the natural movement of air.
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Last Edit: August 19, 2020 6:10 AM
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Question 1: String Compression
Different compression techniques are used in order to reduce the size of the messages sent over the web. An algorithm is designed to compress a given string by describing the total number of consecutive occurences of each character next to it. For example, consider the string "abaasass". Group the conescutive occurence of each character:
'a' occurs one time.
'b' occurs one time.
'a' occurs two times consecutively.
's' occurs one time.
'a' occurs one time.
's' occurs two times consecutively.
If a character only occurs once, it is added to the compressed string. If it occurs consecutive times, the character is added to the string followed by an integer representing the number of consecutive occurences. Thus the compressed form of the string "aba2sas2".
Answers
The algorithm compresses a given string by describing the consecutive occurrences of each character with an integer.
This compression algorithm represents each character in the input string with its consecutive occurrence count. If a character occurs only once, it is directly added to the compressed string, otherwise, the character is added along with the count of its consecutive occurrences. For example, the input string "abaasass" is compressed to "aba2sas2". The algorithm compresses a given string by describing the consecutive occurrences of each character with an integer. This compression technique reduces the size of the input string, making it efficient for sending over the web.
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ANSWER ASAP!!!!!
Which statement is true regarding achievers?
A.
Achievers bring about a reduction in socializers.
B.
Achievers interact with the environment.
C.
Achievers cause grief to other players.
D.
Achievers like to interact with other players.
E.
Achievers like to collect points and earn rewards.
Answers
Answer:
The correct answer will be:
E. Achievers like to collect points and earn rewards.
Explanation:
"Data dictionary is/are ________.
A. codes used to create database applications
B. error logs of databases
C. data that describes the properties of fields and/or rules in
relationships, to enforce data integrity
Answers
Data dictionary is/are Data that describes the properties of fields and/or rules in relationships, to enforce data integrity. The correct option is C.
A data dictionary is a repository or documentation that describes the characteristics and properties of the data elements used within a database. It provides information about the structure, organization, and relationships of the data in a database system. The data dictionary contains metadata, which is data about the data itself.
In the context of databases, a data dictionary describes the properties of fields (attributes) and rules in relationships to ensure data integrity. It specifies details such as the data type, length, format, constraints, and other attributes associated with each field in the database schema. Additionally, it may include information about relationships between tables, including foreign key constraints and other rules that govern the integrity and consistency of the data.
The data dictionary serves as a reference for developers, administrators, and users of the database. It helps ensure that everyone involved understands the structure and properties of the data, enabling consistent and accurate usage of the database system. The correct option is C.
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Which is a computing device that connects network s and exchange data between them
Answers
A computing device that connects networks and exchanges data between them is called a router. A router is a network device that is responsible for directing traffic between different networks. It is used to interconnect networks that have different architectures or different protocols.
A router examines the destination address of the data packets that are received, and it then forwards the data packets to the correct destination network. A router determines the most efficient path for the data to travel, which helps to ensure that data packets are delivered quickly and reliably. Routers operate at the network layer (Layer 3) of the OSI model, and they use routing protocols to exchange information with other routers.
Routing protocols enable routers to learn about the topology of the network, which helps them to determine the best path for data packets to travel. In summary, a router is a computing device that connects networks and exchanges data between them. It is used to direct traffic between different networks, and it enables different networks to communicate with each other. A router operates at the network layer of the OSI model, and it uses routing protocols to exchange information with other routers.
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in some situations, digital cable will produce a much crisper image than analog. what is one important cause of this?
Answers
One important reason for this is that digital signals are less susceptible to noise than analog ones.
What are the primary advantages of a digital signal over an analog signal?Information can be transmitted through digital signals with less noise, distortion, and interference. Digital circuits are simple to replicate in large quantities at relatively low cost. Because digitally programmable systems can alter DSP operations, digital signal processing is more adaptable.
What is the primary distinction between digital and analog technology?The primary distinction between the two is that, in digital technology, information is translated into binary format (zero or one), with each bit representing two amplitudes, while in analog technology, information is translated into electric pulses of varying amplitude.
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What can you do to control who interacts with you in the metaverse?
A. changing your profile setting to public
B. using tool such as mute, block, and report
C. sticking with the people you've meet before in the metaverse
D. checking in with people to make sure they are feeling good
Answers
One can control who interacts with you in the metaverse by using tool such as mute, block, and report. The correct option is B.
What is metaverse?The metaverse is a fictional iteration of the Internet as a single, universal, and immersive virtual world made possible by the use of virtual reality and augmented reality headsets. A metaverse is a network of 3D virtual worlds centered on social connection.
Consider a virtual world in which people can live, work, shop, and interact with others from the comfort of their couch in the real world. This is referred to as the metaverse.
You can use tools like mute, block, and report to control who interacts with you in the metaverse.
Thus, the correct option is B.
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is a keyboard a software?
Answers
Answer:
Yes
Explanation:
Because it's apart of software hope this helps
Is a keyboard a software or hardware?
Computer hardware includes the physical parts of a computer, such as the case, central processing unit (CPU), monitor, mouse, keyboard, computer data storage, graphics card, sound card, speakers and motherboard. By contrast, the software is the set of instructions that can be stored and run by hardware.
Hope it helps, have a great day!❤️✨
List out analog computer
Answers
Answer:
1. Wall clocks.
2. Analog watches
3. Measuring instruments with callibration
Explanation:
Best beginner racing drones?
Answers
Answer:
Walkera Runner 250
Explanation:
This drone is durable, and offers a lot of features while not totally being over the top!
pls help me with cyber security
Answers
Answer: C
Ian Murphy is now known as a "white hat" hacker is a hacker who is hired to hack into companies and expose security vulnerabilities.
Which type of storage disk and disk drive can you use in the given situation?
Amy wants to borrow an interesting movie from Bruce so that she can watch it in her leisure time. Amy can hand over a (BLANK) to Bruce to copy 900 MB file. Bruce needs to have a (BLANK) drive to record data on the used DVD.
BLANK 1
CD
hard disk
DVD
BLANK 2
DVD-RR
DVD-recordable
DVD-RW
Answers
I : DVD
II:DVD-R
A DVD-RW would work too.
The types of storage disk drives that can use in the given situation are as follows:
Amy can hand over a DVD to Bruce to copy a 900 MB file. Bruce needs to have a DVD-RW drive to record data on the used DVD. What do you mean by Storage disk?Storage disk may be defined as a type of hardware device that can be used to store and save digital data and applications which may be in the form of images, video, audio, etc. For example, CDs, DVDs, hard disks, pen drives, etc.
Hard disks generally store a large quantity of data like 120GB to 30.72 TB. But here the data required to be stored is only 900 Mb, so DVD is the most accurate choice for this storage. It stores 500Mb of data to 8.5 Gb. A single-layer HD-DVD stores up to 15GB of storage capacity.
Therefore, Amy can hand over a DVD to Bruce to copy a 900 MB file. Bruce needs to have a DVD-RW drive to record data on the used DVD.
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What are SmartArt graphics?
Graphics that were predesigned by Microsoft
Images that were hand-drawn and scanned in
Graphics that were downloaded from a camera
Images that were designed for different programs
Answers
Answer:
Option A
Explanation:
SmartArt graphic are nothing but the visual representation of ideas or information by using layouts that fits the context of the presentation. These smart art graphics include - sequence diagram, venn diagram, organizational chart etc. These smart art are part of MS office programs i.e MS Word, MS Powerpoint, MS excel etc.
Hence, option A is correct
The elastic limit of the gold forming a piece of wire is equal to 2.6 108 Pa. What is the maximum speed at which transverse wave pulses can propagate along this wire without exceeding this stress
Answers
The maximum speed at which transverse wave pulses can propagate along the gold wire without exceeding the stress of 2.6x10^8 Pa can be calculated using the formula v = √(T/μ), where T is the tension in the wire and μ is the linear density of the wire. By using the formula T = σA and A = πr^2, we can find the values for T and μ and then calculate the maximum speed.
The elastic limit of gold forming a piece of wire is a critical property that determines the maximum amount of stress it can withstand before deforming permanently. The maximum speed at which transverse wave pulses can propagate along this wire without exceeding the stress of 2.6x10^8 Pa can be calculated using the formula v = √(T/μ), where v is the maximum speed, T is the tension in the wire, and μ is the linear density of the wire. To find T, we can use the formula T = σA, where σ is the stress, and A is the cross-sectional area of the wire. We know that the stress is 2.6x10^8 Pa, and assuming the wire has a circular cross-section, the area can be calculated using A = πr^2, where r is the radius of the wire. Once we have T and μ, we can plug them into the formula v = √(T/μ) to get the maximum speed.
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How was the creation of the world wide web browser a stepping stone for future scientific breakthroughs?
Answers
Answer:
Following are the point that described the web browser for the stepping stone as a future scientific breakthroughs.
Explanation:
Tim Berners Lee was the founder of world wide web .The Tim Berners Lee is software engineer at CERN they had seen the troubling of exchanging the data .In that time there are various data in various computer .The Tim Berners Lee felt he had found the way for resolving this problem and develop a thing so that we can exchange the data in any where .In that time already lots of computer are already linked each other with the high speed of the internet so tim develop a new technology called hypertext .In the March 1989, in a paper titled known as "Information Management" Tim is developed but this proposal is rejected .In the 1990 Tim is developed the three technology HTML ,URI and HTTP with the help of this the world wide web is developed and we can share the information anywhere in the world .The sharing of information in a easy way gives the future bright the person in anywhere in the world will access the data or the information also We cam communicate anywhere in the world by using email .Kris is the project manager for a large software company. Which part of project management describes the overall project in detail?
1) Analysis report
2) Resources document
3) Scope
4) Scope creep
Answers
Answer:
Scope or 3)
hope this helps
always love to be marked brainliest
I am looking for code HS 3.4.5 in Technology
Answers
Answer (Code):
penup()
backward(100)
def bottom_line():
left(120)
color("red")
forward(100)
def triangle():
left(120)
color("blue")
forward(50)
left(120)
color("green")
forward(50)
pendown()
pensize(5)
color("red")
forward(50)
for i in range(4):
triangle()
bottom_line()
I
What is a Watermark?
Answers
Lloyd works for a graphic design company. He needs a monitor that accurately represents colors. Lloyd's monitor recently failed, and you have been asked to purchase a new one. You have been asked to find a monitor with a fast pixel refresh rate, low energy consumption, and very accurate colors representation.
Required:
What types of display devices will BEST meet the requirements requested?
Answers
OLED simply stands for Organic Light-Emitting Diode. It is often regarded as a type of technology that uses LEDs in which the light is produced by organic molecules. The types of display devices will best meet the requirements requested OLED.
They are often regarded as organic LEDs that are used to produce display panels.
OLED displays are produced with a number of organic thin films between two conductors. It has a form of a simple design that has a lot of merits over other display technologies.These technology are mostly used today in mobile devices as they give a better image quality.
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What tips should you consider when vacationing somewhere with a culture different than yours? When have you used these tips in your own photography practice? If you have not traveled outside of your home area, describe a place you’d like to go photograph and how these tips might apply there.
Answers
Answer:
When vacationing anywhere out of home city, county, or state, Abide by all laws, always set up space for you (space that others recognize as yours), and most importantly, DO NOT TAKE PICTURES OF ANYONE WITHOUT CONSENT (this also means picture near people, they can get the wrong idea) if you don't speak the language of the people of the country you are going to, do some language practice, bring a translator, and also someone who you know is familiar with that language.
Explanation:
How do science, mathematics, and technology each influence engineering
Answers
Answer:
In order to start engineering you must know the basics Science, Math, and Technology. For example you need math to get all the parts in the right place and fix any pieces that need to be angled right, science because you need to know what happens if you put this with that if it’ll spark break or anything, and technology because you need to know the different pieces and their purpose, hope it helps!
Explanation:
Answer:
Math: By using numbers and some problems are really hard and they like solving them makes some kids want to do engineering
Science: By do expirments and getting kids excited about doing something like engineering
Technolgy: I think this speaks for itself by saying that if you like computers and dealing with technogly you would want to do engineering
Explanation:
Atomic integers in Linux are useful when A) several variables are involved in a race condition. B) a single process access several variable involved in a race condition. C) an integer variable needs to be updated. D) All of the above.
Answers
Atomic integers in Linux are useful when an integer variable needs to be updated.
What is an Atomic Integer?This is known to be an applications that is said to be a form of an atomically incremented counters, and it is one which cannot be used as a kind of replacement for any Integer.
Therefore, Atomic integers in Linux are useful when an integer variable needs to be updated.
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assume a client requests an html file. suppose the html file references six very small objects on the same server. neglecting transmission times, and assuming a total of tdns for dns operations, how much time elapses with
Answers
The time elapsed with HTML processing and objects embedded in the HTML will depend on the time elapsed during six small object requests.
Suppose tdns = 100 ms for each DNS operation, the time it takes to get six small objects would be 600 ms. When adding HTML processing time, the total amount of time will be as follows: Ttotal = 600 + HTML processing time. To calculate HTML processing time, the amount of time it takes to parse HTML is used. HTML parsing time is dependent on the size of the HTML document.
As a result, the amount of time it takes to parse HTML would be proportional to the size of the document. Furthermore, the time it takes to retrieve and send objects from the server is negligible since the objects are on the same server. Thus, the total amount of time spent is as follows: Ttotal = 600 + HTML processing time.
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Merle wants to change the formatting of all bold cells to be non-bolded. Shania wants to copy the cell color,
border, and font from cell E12 to all of column D. Which best describes what each person should do?
A. Merle should use Find and Replace, and Shania should use the Format Painter.
B.Merle should use the Rules Manager, and Shania should use Find and Replace.
C.Merle should use the Format Painter, and Shania should use the Rules Manager.
D. Merle should use the Format Painter, and Shania should use Find and Replace.
Answers
Answer:
Merle should use Find and Replace, and Shania should use the Format Painter.
Explanation:
It's the most logical to me.. And that's what I'm gonna do on my test. =) hope it helps.
which factors have led to the fast growth in IT
Answers
Answer:
Factors influencing population growth
Economic development. ...
Education. ...
Quality of children. ...
Welfare payments/State pensions. ...
Social and cultural factors. ...
Availability of family planning. ...
Female labour market participation. ...
Death rates – Level of medical provision
______________________ increases security by verifying identity based on more than just a password or pin.
Answers
Answer:
two-factor authentication
Explanation:
two-factor authentication increases security by verifying identity-based on more than just a password or pin.
import pickle
def enter():
f1=open("c:\\xics\\data.dat","wb")
n=int(input("Enter ni of students."))
for i in range(n):
rno=int(input("Enter roll no."))
name=input("Enter name")
marks=int(input("enter marks"))
d={"rno":rno,"name":name,"marks":marks}
pickle.dump(d,f1)
f1.close()
Answers
Answer:
Export ariana grande fort nite skin
Answer:
I M P O R T P I C K L E
Explanation:
a student is going to e-mail a file she has created and needs to reduce the file size. what tool should she use to reduce the file size?
Answers
Answer:
Compress the file to reduce the file size.
what is thesaurus?what do you mean by spell chek feature
Answers
Answer:
Thesaurous is a book that lists words in groups of synonyms and related concepts.
A Spell Checker (or spell check) is a Software feature that checks for misspellings in a text. Spell-checking features are often embaded in software or services, such as word processor, email client, electronic dictionary, or search engine.
When comparing differences between groups, for example comparing math or verbal skills between individuals who identify as men or women, the most likely conclusion about differences in performance based on research is:
Answers
there may be statistical differences observed at a group level, but individual variations within each group are significant and overlap exists between the groups.
When comparing differences between groups, such as math or verbal skills between individuals who identify as men or women, the most likely conclusion about differences in performance based on research is that Research on gender differences in various domains, including cognitive abilities, has shown that while there may be average differences between men and women in certain skills or areas, the variations within each gender group are often larger than the differences between the groups. This means that while there may be tendencies or trends observed at a population level, it is not appropriate to make generalized conclusions about the abilities or performance of individuals based solely on their gender.
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