what does it mean when programmers say tables are not normalized?
Answers
When programmers say that tables are not normalized, it means that the structure of the database is not organized in a way that minimizes data redundancy and dependency. In simpler terms, it means that the database has unnecessary data duplication or that the data is not organized optimally.
Normalization is a process of structuring a database so that it follows certain rules. These rules help to minimize redundancy, improve data integrity, and simplify data retrieval. There are different levels of normalization, from first normal form (1NF) to fifth normal form (5NF), each with specific rules that must be followed.When a table is not normalized, it may contain duplicated data, which can lead to inconsistencies, errors, and problems with data integrity. For example, if a customer's information is duplicated in several tables, it can be difficult to update that information in all the relevant places. Additionally, if a change is made to one instance of the data, the other instances may become out of date or inconsistent.To explain further, let's take an example of an online store. Suppose the store has a table for customer information that contains columns for customer name, address, phone number, and email. Additionally, there is another table for orders that contains columns for order ID, customer name, product ID, and order date.Now, suppose a customer places multiple orders, resulting in their name appearing multiple times in the orders table. This redundancy can be problematic for a number of reasons. Firstly, if the customer's information changes (e.g. they move to a new address), it will need to be updated in multiple places. This can be time-consuming and error-prone. Secondly, if a customer's name is spelled differently in different instances (e.g. "John Smith" vs. "Jon Smith"), it may be difficult to query the database accurately.To normalize this database, we can create a separate table for customer information and link it to the orders table using a foreign key. This way, each customer's information is stored only once, and any updates to that information will be reflected in all relevant places.
In summary, normalization is an important process for ensuring data consistency and integrity in a database. When programmers say that tables are not normalized, it means that the structure of the database needs to be optimized to minimize redundancy and dependency. The main answer to your question is that when programmers say tables are not normalized, it means the database tables have not been structured optimally to reduce redundancy and improve data integrity.Database normalization is a process of organizing the columns and tables in a relational database to minimize data redundancy and improve data integrity. Normalization involves splitting larger tables into smaller, more manageable tables and establishing relationships between them using primary and foreign keys. There are several levels of normalization, known as normal forms (e.g., 1NF, 2NF, 3NF, etc.). Each normal form builds upon the previous one, further refining the database structure. When tables are not normalized:
There may be duplicate data or redundancy in the table, which can lead to increased storage requirements, slower query performance, and potential inconsistencies.Insert, update, and delete operations may become more complex due to the redundant data.The risk of data anomalies increases, making it more difficult to maintain data integrity.To normalize a database, programmers follow a series of rules or guidelines, progressively refining the table structure and ensuring that it adheres to the desired normal form.
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Related Questions
Problem # I: Creating a BASELINE SCHEDULE - Show all calculations and highlight critical path(s). You have been assigned as a Project Engineer on a construction project and been asked by your project
Answers
As a project engineer on a construction project, creating a baseline schedule is a critical task.
This process involves identifying all tasks, estimating their durations, and mapping dependencies among them. The critical path is then determined, which is the sequence of tasks that must be completed on time for the project to finish as scheduled.
The first step is to list all the tasks required for the project and estimate their durations. This could be based on past projects, expert opinion, or using estimation techniques like PERT or CPM. The next step is to identify dependencies among tasks, i.e., which tasks must be completed before others can start. This information can be visualized in a Gantt chart or network diagram. The critical path is then identified as the longest path through this network, indicating the minimum time required to complete the project. Any delay in tasks on the critical path will result in a project delay.
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mysqli_connect(): (hy000/1045): access denied for user
Answers
The error message "mysqli_connect(): (hy000/1045): access denied for user" indicates that the user attempting to connect to the database has been denied access. This could be caused by a variety of factors, including incorrect login credentials, incorrect database name, or incorrect database server information.
To fix this error, check that you have the correct login credentials, database name, and server information in your PHP code. Ensure that the user you are trying to connect as has the correct permissions to access the database. Also, make sure that the database server is running and accepting connections.
In summary, the "mysqli_connect(): (hy000/1045): access denied for user" error message can be caused by a number of different issues, including incorrect login credentials, database name, or server information.
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Consider the graph of the function f(x) = 2(x + 3)2 + 2. Over which interval is the graph decreasing? (–∞, –3) (–∞, 2) (–3, ∞) (2, ∞)
Answers
Answer:
The interval over which the graph is decreasing is;
(-∞, -3)
Explanation:
The given function is f(x) = 2·(x + 3)² + 2
By expanding the function, we have;
2·x² + 12·x + 20
From the characteristics of a quadratic equation, we have;
The shape of a quadratic equation = A parabola
The coefficient of x² = +2 (positive), therefore the parabola opens up
The parabola has a minimum point
Points to the left of the minimum point are decreasing
The minimum point is obtained as the x-coordinate value when f'(x) = 0
∴ f'(x) = d(2·x² + 12·x + 20)/dx = 4·x + 12
At the minimum point, f'(x) = 4·x + 12 = 0
∴ x = -12/4 = -3
Therefore;
The graph is decreasing over the interval from -infinity (-∞) to -3 which is (-∞, -3)
Please find attached the graph of the function created with Microsoft Excel
The graph is decreasing over the interval (-∞, -3).
Answer:
A. (–∞, –3)
Explanation:
Edge 2021 ( if feel still think it's wrong, check the picture ⬇️ )
Stephen is slowing down as he approaches a red light. He is looking in his mirror to switch lanes and misjudges how close Keisha's car is, rear-ending her car. When
they get out and assess the damage, Keisha's bumper will need to be replaced. What type(s) of insurance could Stephen use to cover this accident? Explain.
Krisha had some discomfort in her neck at the time of the accident but thought it was minor and would go away. A week or so after the accident, Keisha finally goes
What t) of insurance could Keisha use to cover this accident?
Answers
The type of insurance that Stephen could use to cover this accident is known as liability coverage
What t) of insurance could Keisha use to cover this accident?The insurance that Keisha could use to cover this accident is personal injury protection.
In the case above, The type of insurance that Stephen could use to cover this accident is known as liability coverage as damage was one to his property.
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If a company wanted to link the computerized functions of all its divisions and subsidiaries of the firm into an integrated software program that uses a single database in order to develop a more integrated system that improves customer service, it would most likely use.
Answers
Since the company wanted to link the computerized functions of all its divisions and subsidiaries of the firm into an integrated software program that uses a single database in order to develop a more integrated system that improves customer service, it would most likely use enterprise resource planning (ERP),
How does ERP operate and what does it do?Business resource planning definition (ERP) is Enterprise performance management, a piece of software that aids in planning, budgeting, forecasting, and reporting financial outcomes for a business, is also a component of a full ERP suite. ERP systems enable data to flow between various company operations and connect them all together.
Therefore, Software for enterprise resource planning provides single-system solutions that connect processes throughout the company. These programs enable cross-functional cooperation, information sharing, and user interaction inside a single interface. They boost effectiveness, efficiency, and teamwork.
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Read the sentence. Piles of discarded trash litter the cobblestones of the quaint brick alley. Which image best shows a visualization of this sentence? A cobblestone alley with garbage on the ground. A cobblestone alley with several garbage cans. A cobblestone alley with weeds growing in the cracks. A clean cobblestone alley.
Answers
Answer:
C
Explanation:
JUST DID IT
Answer:
c
Explanation:
PYTHON!
PLEASE HELPP
File name: 2 String Formatting
Task 1: Fill the blank using string formatting: Use 2 different ways to complete the sentence
first_name = 'Baby'
last_name = 'shark'
___ ___ doo doo doo doo doo doo
Print out: Baby shark, doo doo doo doo doo doo
Task 2: Write a program that aligns with the image below, using string formatting.
(PICTURE BELOW)
Task #3 Mad libs:
Mad_libs = '''Face it {name}, you are about the greatest thing since
{favorite_food}. No one else can {verb1} like you can.
Your best friend says you are the {adjective1}-est person in
the world. Sure, you once {embarassing_thing_you_did},
but you also {honorable_thing_you_did}. So, {favorite_endearment},
today is the day you're going to stop beating up on yourself for being
{negative_adjective1} and start loving yourself for being
{positive_adjective1}, {postive_adjective2} and {positive_adjective3}.
And if people give you a {adjective2} time, just tell'em they can take
their {noun} and {verb2} it to the trash.'''
Answers
Explanation:
hi dude 15 Alignment, font styles, and horizontal rulesContentsFormattingBackground colorAlignmentFloating objectsFloat an objectFloat text around an objectFontsFont style elements: the TT, I, B, BIG, SMALL, STRIKE, S, and U elementsFont modifier elements: FONT and BASEFONTRules: the HR elementThis section of the specification discusses some HTML elements and attributes that may be used for visual formatting of elements. Many of them are deprecated.15.1 Formatting15.1.1 Background colorAttribute definitionsbgcolor = color [CI]Deprecated. This attribute sets the background color for the document body or table cells.This attribute sets the background color of the canvas for the document body (the BODY element) or for tables (the TABLE, TR, TH, and TD elements). Additional attributes for specifying text color can be used with the BODY element.This attribute has been deprecated in favor of style sheets for specifying background color information.15.1.2 Alignment
It is possible to align block elements (tables, images, objects, paragraphs, etc.) on the canvas with the align element. Although this attribute may be set for many HTML elements, its range of possible values sometimes differs from element to element. Here we only discuss the meaning of the align attribute for text.Attribute definitionsalign = left|center|right|justify [CI]Deprecated. This attribute specifies the horizontal alignment of its element with respect to the surrounding context. Possible values:left: text lines are rendered flush left.
center: text lines are centered.
right: text lines are rendered flush right.
justify: text lines are justified to both margins.
The default depends on the base text direction. For left to right text, the default is align=left, while for right to left text, the default is align=right.
These statements describe LANs. SELECT ALL THAT APPLY
1) are not able to connect to the Internet
2) connect networks over a large geographic area
3) don't have to be connected to other networks
4) located in one building or adjacent buildings
5)wires connecting the network owned by the organization
Answers
Local area networks connect computers and give users shared access to printers, data, and other resources. Peer-to-peer or client-server architectures are the two main types of local area network architecture. Thus, option B, D, E is correct.
What is the significance of local area network?Computers may swiftly and readily exchange data and messages using local area networks. This expedites the process and saves time.
Therefore, Any user on the network can send and receive messages and data using LAN. Users can access the server-stored data via the network from any computer.
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Why is my phone not allowing me to make calls iphone.
Answers
It’s the little green icon when u pull down on the screen looks like a i with 3 lines around it
Also in your settings go to search and type wifi calling and make sure that’s turned on so you can call people when connected to wifi
Finally make sure to full hard restart your phone for as it is a possibility it could have bugged out.
hold power button and sound down still prompts you with a swipe to shut down.
Which of the following represent advantages of GPL-licensed software? Check all of the boxes that apply D It is always free of cost. D D Itallows the source code to be modified. It can be redistributed by the user. D Itcan be included in proprietary software. It can be modified and re-sold as proprietary software. DONE
Answers
Under the terms of the GNU Public License, also referred to as the GNU GPL or just the GPL, open source software may be copied, updated, and redistributed. Option A,C is the proper choice.
The finest software is it open source?Open-source software is very trustworthy. Numerous experienced engineers frequently develop and constantly enhance open-source software. This makes it more likely that a flaw or vulnerability will be discovered and fixed right away.
What does "source software" mean?Open source software is defined as code that is meant to be publicly accessible; anybody can examine, modify, and distribute the code as they see fit. Open source software is developed collaboratively and decentralized through peer review and community production.
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........ manages the function of all the hardware and other software used in the computer.
Answers
Answer:
The answer to this question is given below is in the explanation section.
Explanation:
manages the function of all the hardware and other software used in the computer:
operating system is defined as a system software that manages computer hardware and software resources and provide common services for computers programs.All application software computer programs requires an operation system to function. operating system controls computer hardware run the computer programs and organize file.
CPU:
central processing unit that bring the instruction from memory to be executed and decodes.
Storing device:
Any hardware that can hold information temporarily and permanently. we distinguish two type of storage: as primary storage device and a secondary storage device.
Example:
Magnetic storage device:hard drive,floppy diskette etc.optical: Blu-ray disc,CD Rom disc.Flash memory device:memory card memory sick,ssd
Hardware:
Hardware include the physical features,which are every part that you can either see or touch, for example monitor,case,keyboard,mouse and printer.
Software:
The part which activate the physical components called software. it includes the features that resposible for directing the work to the hardware.
in the high-low program, it's impossible for the user to guess the target value in one guess. true false
Answers
False. It is possible for the user to guess the target value in one guess.
What is User?User is an individual who interacts with a computer system, often for the purpose of accomplishing a task. A user could be any person, from a child playing a game to an adult using a computer for business purposes. By using the system, a user can input data, such as text, images, and audio, and retrieve output in the form of information, graphics, or sound. In many cases, the user is the primary beneficiary of the computer system, as well as the main source of its data.
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Select the correct answer.
Pedro has started an online food-ordering website. What should Pedro ask his customers to do to prevent fraudulent actions?
A
B.
Ask customers to opt for cash on delivery only.
Ask customers to avoid uploading anything about his website on social media.
Ask customers to use strong passwords to protect their accounts.
C.
D.
Ask customers to order only for the minimum value.
Reset
Next
Answers
Answer:
ask customers to use strong passwords to protect their accounts
When working in the urology/nephrology clinic, which patient could the nurse delegate to an experienced licensed practical/vocational nurse (lpn/lvn)?
Answers
In a urology/nephrology clinic, the nurse could delegate patients with stable conditions, routine procedures, and standardized care to an experienced licensed practical/vocational nurse (LPN/LVN).
In more detail, delegation of patient care is based on several factors, including the complexity of the patient's condition, the level of expertise and training of the nurse, and the policies and regulations of the healthcare facility. In a urology/nephrology clinic, the nurse can delegate certain tasks to an experienced LPN/LVN. Patients with stable conditions, such as those requiring routine follow-up visits, medication administration, or simple procedures like catheterization, can be delegated to an LPN/LVN.
These tasks often involve standardized care protocols that an experienced LPN/LVN can handle competently. However, patients with more complex conditions, requiring advanced assessment, critical decision-making, or specialized procedures, may require the expertise of a registered nurse (RN). These cases typically demand a higher level of clinical judgment and a broader scope of practice, making them more suitable for an RN.
It's important to note that delegation should always comply with the state nursing practice act, facility policies, and the nurse's own assessment of the LPN/LVN's competency. Regular communication, supervision, and collaboration between the RN and LPN/LVN are essential to ensure safe and effective patient care.
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What are some of the functions in the Consolidate dialog box? Check all that apply.
Average
Count
Frequency
Maximum
Minimum
Mode
Sum
Answers
Answer:
sum average and count is the answer
an obstacle or barrier that may prevent you from accomplishing your goal is called
Answers
Answer:
a roadblock
Explanation:
A _____________ is designed for a individual user.
This is for Keyboarding Applicaions
Plz help :D
Answers
Answer:
i don't know it sorry
Explanation:
how many votes does a candidate need to become president of the US ?
Answers
Answer:
270
Explanation:
google mhm because yes the election is going on
Answer:
270 Electoral votes
Explanation:
Our votes don't really count for the Electoral College is really the people who choose the next president.
Why should you limit what information is in your digital footprint?
Answers
Answer:
Your “digital footprint” includes all traces of your online activity, including your comments on news articles, posts on social media, and records of your online purchases. When you know the boundaries of your digital footprint and take steps to contain it, you can help protect your identity and your reputation.
Explanation:
This question has two parts : 1. List two conditions required for price discrimination to take place. No need to explain, just list two conditions separtely. 2. How do income effect influence work hours when wage increases? Be specific and write your answer in one line or maximum two lines.
Answers
Keep in mind that rapid prototyping is a process that uses the original design to create a model of a part or a product. 3D printing is the common name for rapid prototyping.
Accounting's Business Entity Assumption is a business entity assumption. It is a term used to allude to proclaiming the detachment of each and every monetary record of the business from any of the monetary records of its proprietors or that of different organizations.
At the end of the day, we accept that the business has its own character which is unique in relation to that of the proprietor or different organizations.
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What are the 3 general themes that are found in great advertising
Answers
Answer:
Personal Appeal, Social Appeal, and Humor Appeal
Explanation:
How the data is converted into the information?
Answers
Answer:
the data is converted into information by data processing
Answer:
by data processing
Explanation:
data is converted to information by analyze or manipulate data by combining with other data and using experience
In your own words, explain what it means to “buy low, sell high.”
Answers
Answer:
Resell value should be high like buying a used car for a low price fixing it a bit and double your money.
Explanation:
Answer:
Exactly what it says
Explanation:
You buy items at a low price then sell them at a higher price to ensure you get a profit
what do the power key and refresh key do when pressed together
Answers
Answer:
shuts down the laptop.
Explanation:
i just did it and almost had a heart attack because it wouldn't turn on
Given two objects represented by the tuples (22, 1, 42, 10) and (20, 0, 36, 8):
(a) compute the euclidean distance between the two objects.
(b) compute the manhattan distance between the two objects.
(c) compute the minkowski distance between the two objects, using q = 3.
(d) compute the supremum distance between the two objects.
Answers
Answer:
Given,
P = (22, 1, 42, 10)
Q = (20, 0, 36, 8)
a. Formula for Euclidean Distance :
distance = ((p1-q1)^2 + (p2-q2)^2 + ... + (pn-qn)^2)^(1/2)
Now,
distance = ( (22-20)^2 + (1-0)^2 + (42 - 36)^2 + (10-8)^2) ) ^(1/2)
=( (2)^2 + (1)^2 + (6)^2 + (2)^2 ) ) ^(1/2)
=(4+1+36+4)^(1/2)
=45^(1/2)
Distance = 6.7082
b.Manhattan distance :
d = |x1 - x2| + |y1 - y2|
d = |22- 20| + |1 - 0|
d = |2| + |1|
Explanation:
Completar Fill in the blanks with the correct familiar commands. dar (negative) 1 of 1 Question 2 with 1 blank hacer (affirmative) 1 of 1 Question 3 with 1 blank ir (negative) 1 of 1 Question 4 with 1 blank poner (affirmative) 1 of 1 Question 5 with 1 blank hacer (negative) 1 of 1
Answers
The affirmative tú command hacer is known as haz.
The affirmative tú command decir - diThe affirmative tú command ir - veThe affirmative tú command poner -ponWhat is the translation about?The translation are:
The affirmative tú command to do is known as do.The affirmative tú command to say - diThe affirmative tú command ir - veThe affirmative tú command to put -ponThe Affirmative tú commands is known to be one that is said to be similar as the él/ella/Ud.
Note that this is seen as the conjugation of the present tense and it is one that is often used to tell another person that you are familiar with that thing.
Hence, The affirmative tú command hacer is known as haz.
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Why do you need to cite your sources? (check all that apply)
other researchers should not be able to use your work
you give credit to the original author
you avoid plagiarism
DONE
Answers
the answer to this is 2 and 3
Hope this helped
-scav
Answer:
2 3 baka baddies
Explanation:
what do these actions represent? establishing authentication procedures auditing regularly implementing ntp
Answers
Establishing authentication procedures, auditing regularly and implementing NTP are all actions that represent ways of ensuring system security.
Here's a brief overview of what each action entails:Establishing authentication procedures, Authentication procedures are used to authenticate or verify the identity of users accessing a system or network. By implementing strong authentication procedures it is possible to prevent unauthorized access, data breaches, and other security risks.
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How do I convert BCD to denary and denary to BCD? (For Both positive and Negative integer of denary)
Answers
Answer:
BCD is very similar to regular binary code. Decimal digits are represented as binary like so:
0 = 0000
1 = 0001
2 = 0010
3 = 0011
etc...
9 = 1001
However, in BCD the structure of decimal code is maintained, so e.g., the number 123 would be encoded digit-by-digit as:
0001 0010 0011
whereas in pure binary it would be encoded as
01111011
So you immediately see that BCD is not so efficient. That's why it is not used very often. Encoding and decoding is very easy as you take the same approach as with pure binary, but perform it per digit (ie., per group of 4 bits).
The area of the spreadsheet highlighted in red is the _____.
cell C1
formula bar
row C
column C
Answers
A spreadsheet is a software application which is used to display numerical data in a tabular form. It has further functions which includes organizing, displaying, calculating data, etc where the data can be viewed at a glance and retrieved from memory.
There are different types of spreadsheet which includes:
G00gle SheetMicrosoft ExcelLibreOfficeSmartsheet, etc.Data can be arranged in rows and columns.
Please note that your question is incomplete so I gave you a general overview to help you get a better understanding of the concept.
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Answer:
column C
Explanation:
i got it right