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Questions tagged [redundancy]

Redundancy is the duplication of critical components or functions of a system with the intention of increasing reliability of the system, usually in the case of a backup or fail-safe.

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What is the difference between "redundant" and "value redundant"?

I am trying to understand the notion of data redundancy. Can someone please help to explain what is the difference between the notion of "a relation schema is redundant" and "a relation schema is value redundant"? Below is the formal definition,…
user3735871
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Does this design show any type of redundancy ? If so, please suggest better design that is time efficient also?

Song{ int Songid; String name; Artist Artist; Album album; void play(); } Album{ int albumid; String name; Artist albumArtist; ArrayList songs; ArrayList getSongs(); } Artist{ int arId; …
user3733814
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Database redundancy when storing often-changing number value

For my next app, users will likely have a number of 'points' which changes constantly. For example, a user might accrue a number of points for performing a task, have points taken away, or have points donated to them. I'm wondering whether to store…
sheldonbaker
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How to implement the Damm algorithm for checksums and redundancy

Is anyone here aware of any textbooks or industry guides that provide a practical guide for an ordinary engineer (not a doctor of mathematics) to implement the Damm algorithm? Specifically I would like to know how the Latin squares are generated…
Andrew Stewart
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Redundancy vs. aggregated Data for performance

I have several code/value/synonyms lists (i.a. ICD codes) that include several validity periods, aggregated into versions (one per year). So now I may choose the fully normalized approach, with following structure: VERSIONS(id INT PRIMARY KEY, name…
Andreas H.
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How can i do it in more compact way for get Color number in java

Here is my part of code. I am looking for a way to reduce the redundancy to get red, green, and blue by three big parts but looks like similar calculation. Is any better way to make it work? For loop? or any idea? Is anyone can give me an idea?…
Bun
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Isn't the line QProcess *p redundant?

I've stumbled across this GitHub Project. While I don't agree with the code in general I can't wrap my mind about the line: QProcess *p; and p=*it; Am I wrong when I feel like creating a new pointer there is completely redundant or is there some…
deW1
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Isn't this data redundancy in android databases?

I am learning about databases in android and I realized that in android it's not like that you create your database and put it somewhere in memory and get access to it, rather you create and put data within the app. I learned a way to create my…
Morteza
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Non-abstract types redundancy in Signature/Functor pattern

With the Signature/Functor pattern, I refer to the style of Map.S / Map.Make in the OCaml standard library. This pattern is highly successful when you want to parameterize a large piece of code over some type without making it fully polymorphic.…
choeger
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Trying to eliminate redundant code execution for validation and entity

I'm looking to see if there is a way to eliminate one of the two calls that gets made to my method to google maps to calculate long/lat coordinates. Here is my method. public static GeocoderCoordinates GetCoordinates(string region) { …
chuckd
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How to improve redundancy in HTML and ROR with partials?

I have these 2 partials written for my Ruby on Rails application. Is there any clever way two merge them into one? Copy pasting one partial into the other is not allowed What I would like to have is something like this: @member = 'Player' render…
Justin
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Looking for solution to cloud data storage persistence issues

I'm looking for a cloud data storage service which offers the following: Data is stored in duplicate (or more) Data is identical between original and duplicate(s) at all times (i.e. sync original->duplicate is instant or data storage requests don't…
Maarten
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Optimizing Mysql to avoid redundancy but still have fast access to calculable data

An example for the sake of the question: I have a database which contains users, questions, and answers. Each user has a score which can be calculated using the data from the questions and answers tables. Therefore if I had a score field in the…
DiglettPotato
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Microsoft Azure - geo and locally redundant

There are 3 options of Replication to deploy Azure project: locally-redundant, geo-redundant and RA geo-redundant. Microsoft says, that locally redundant creates 3 copies, geo-redundant - 6 copies (in 2 datacenters) for protection. And it costs in 2…
Oleg Sh
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How to manage redundancy in Chef-repo and berkshelf cookbooks

I am using Chef for automation. I have a chef-repo cookbook that has custom cookbooks as well as cookbooks from the opscode site. As few cookbooks have dependency on other cookbooks I have installed those dependencies using berks utility. Now my…
user3086014
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