#MultiValue Basic

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MultiValue is a type of NoSQL and multidimensional database, typically considered synonymous with PICK, a database originally developed as the Pick operating system.

Documentation.

Question Mindy Caldwell · Apr 21, 2023

Salesrep is the production file with only an index on the idkey (it has more properties than shown here).

Property SalesRepId As %String(MVATTRIBUTE = 0, MVJUSTIFICATION = "L", MVWIDTH = 10) [ Required ];

Property Surname As %String(MVATTRIBUTE = 2, MVJUSTIFICATION = "L", MVWIDTH = 25);

Property Forename As %String(MVATTRIBUTE = 3, MVJUSTIFICATION = "L", MVWIDTH = 25);
. . .

Property FundraiserId As %String(MVATTRIBUTE = 15, MVJUSTIFICATION = "L", MVWIDTH = 20);

Index SalesRepIdIndex On SalesRepId [ IdKey, PrimaryKey, Unique ];

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Question Stewart H · Oct 4, 2017

I setup an account in Cache and when I try to sort the dictionary item in the file by using the command SORT DICT filename, where filename is the name of the file i.e. SORT DICT TEST, I get the following error  CMQL: The DICT entry "FIELD.ASSOC_" is not defined

The LISTDICT works correctly. Any thoughts on how to correct this error?

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Question stephen mayo · Aug 10, 2017

Hi,

I am new to Cache' MV but have extensive experience with other Pick flavors especially Unidata. 

I need to determine the impact of adding several indexes to a large file with over 51,000,000 records. 

On other systems, I could use FILE.STAT, ANALYZE.FILE and shell to the OS to determine how large the index file was. 

None of those seem to be available in Cache' MV. Shelling to the OS just tells me the size of CACHE.DAT.

What is the best way to determine what the disk impact would be if I added an index (CREATE-INDEX) to a file?

TIA,

Steve

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Article Developer Community Admin · Oct 21, 2015 1m read

InterSystems has implemented a broad set of MultiValue extensions for its Caché multidimensional database. These extensions enable the migration of MultiValue applications to Caché and bring the full range of Caché object and SQL development technologies to MultiValue developers. The result: your existing MultiValue investments are preserved, you gain a broad spectrum of highly scalable deployment options, and your developers can combine the best of MultiValue, object, relational, and technologies to extend existing applications and build new ones.

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