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Questions tagged [multivalue]

The term "multivalue" refers to a nested data structure where a data column in a database table can contain multiple levels of nested columns.

In some databases, such as the namesake MultiValue database, an example of which is UniVerse, a number of top-level columns can be associated with each other, so that the data in, for example column 1, sub-column 2 has a direct relationship with the data in column 2, sub-column 2.

An example structure could look as follows:

Column one being order numbers, column 2 being order dates and column 3 being part numbers:


Column 1: 00001]00002]00003
Column 2: 26/07/12]27/07/12]28/07/12
Column 3: P123^P124]P125]P126

Multivalue data structures can often lead to excellent performance, one of the reasons being that they eliminate the need for resource consuming table joins.

Apart from the original MultiValue Databases, other examples which use multivalued data structures are many of the NoSQL databases and many Business Intelligence and Reporting tools.

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Working with web service that return multi values to iphone

I'm building an iPhone application calling webservice that return single and multi values. boolean …
Raed
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Solr MultiValue Fields and adding values

I am building a search engine, and have a not so unique ID for a lot of different names... So, for example, there could be an id of B0051QVF7A which would have multiple names like "Kindle" "Amazon Kindle" "Amazon Kindle 3G" "Kindle Ebook Reader"…
TiernanO
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Query MS Database Table with Multiple Column Values Represented By Multiple Rows

I have created a MS Access database for filtering documents that meet certain criteria. Most documents have multiple criteria, so I added multiple rows for the same document for each different criteria value. I also have another column for the…
Dee
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SOLR: Is it it possible to index multiple timestamp:value pairs per document?

Is it possible in solr to index key-value pairs for a single document, like: Document ID: 100 2011-05-01,20 2011-08-23,200 2011-08-30,1000 Document ID: 200 2011-04-23,10 2011-04-24,100 and then querying for documents with a specific value…
Stefan Schadwinkel
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Use MultiValueMap Request body

I have a post mapping in my controller with @RequestBody MultiValueMap. Getting 415 unsupported media type error in post man while giving request body like this. Request type is json. { "name" : "john" } Can someone help on this?
Anamika
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Domo - Split multi value comma-delimited column based on values

I have a data source in Domo with a multi value column that is comma delimited. I am able to split the column using the comma as delimiter, into new columns. Example- fruit, vegetables Gives new column 1 Fruit and new column 2…
Elby
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iOS Address Book error on ABMultiValueRef

I'm facing a problem accessing the address book of my iPad 2. In particular I have problems retrieving the email of my contacts. What I want to do is to access the address book, retrieve my contacts and show them in a table view. Everything seems…
ubiAle
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How to plot data that is separated into multiple categories using ggplot2?

A market survey on consumer satisfaction when using two cleaning products (Product A and Product B) was separated according to room (Kitchen, Bathroom, Bedroom), frequency of use (Daily, Weekly, Monthly) and product bottle size (Small, Medium,…
DVCar
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How to reliably use a matrix (multivariable) response in R using a formula?

I am trying to use a multivariable response in R and came across the damned formulas, and having all sorts of unexpected behaviors, mainly when using them inside functions and packages. This question is twofold I can input a multivariable response…
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Show MultiValueLabels in a columnwise fashion

In the following image I want to have the labels of my multi-value Select component be underneath each other in a columnwise fashion.