A column can be tagged with a custom tag. In this case, the user must
indicate an auxiliary table that contains statistical information on
the possible values of this column (below).
A column can be tagged with a InfoType to use the relevant public
dataset as a statistical model of population, if available. We
currently support US ZIP codes, region codes, ages and genders.
To programmatically obtain the list of supported InfoTypes, use
ListInfoTypes with the supported_by=RISK_ANALYSIS filter.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThis document provides reference documentation for the \u003ccode\u003eQuasiId\u003c/code\u003e class within the Google Cloud Data Loss Prevention v2 API, outlining its properties, constructors, and implemented interfaces.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eQuasiId\u003c/code\u003e class represents a column with a semantic tag, used in the context of data loss prevention and risk analysis, and it supports tagging with custom tags or InfoTypes.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version of the \u003ccode\u003eQuasiId\u003c/code\u003e class documentation is 4.16.0, and there are several older versions available ranging from 4.15.0 to 2.15.0.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eQuasiId\u003c/code\u003e implements \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e interfaces, enabling it to be used within protocol buffer-based systems.\u003c/p\u003e\n"],["\u003cp\u003eThe class includes properties such as \u003ccode\u003eCustomTag\u003c/code\u003e, \u003ccode\u003eField\u003c/code\u003e, \u003ccode\u003eHasCustomTag\u003c/code\u003e, \u003ccode\u003eInferred\u003c/code\u003e, \u003ccode\u003eInfoType\u003c/code\u003e, and \u003ccode\u003eTagCase\u003c/code\u003e, allowing for the specification of various aspects of the tagged column.\u003c/p\u003e\n"]]],[],null,["# Google Cloud Data Loss Prevention v2 API - Class QuasiId (4.19.0)\n\nVersion latestkeyboard_arrow_down\n\n- [4.19.0 (latest)](/dotnet/docs/reference/Google.Cloud.Dlp.V2/latest/Google.Cloud.Dlp.V2.QuasiId)\n- [4.18.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.18.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.17.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.17.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.16.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.16.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.15.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.15.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.14.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.14.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.13.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.13.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.12.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.12.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.11.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.11.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.10.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.10.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.9.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.9.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.8.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.8.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.7.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.7.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.6.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.6.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.5.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.5.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.4.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.4.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.3.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.3.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.2.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.2.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.1.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.1.0/Google.Cloud.Dlp.V2.QuasiId)\n- [4.0.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/4.0.0/Google.Cloud.Dlp.V2.QuasiId)\n- [3.5.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/3.5.0/Google.Cloud.Dlp.V2.QuasiId)\n- [3.4.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/3.4.0/Google.Cloud.Dlp.V2.QuasiId)\n- [3.3.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/3.3.0/Google.Cloud.Dlp.V2.QuasiId)\n- [3.2.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/3.2.0/Google.Cloud.Dlp.V2.QuasiId)\n- [2.16.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/2.16.0/Google.Cloud.Dlp.V2.QuasiId)\n- [2.15.0](/dotnet/docs/reference/Google.Cloud.Dlp.V2/2.15.0/Google.Cloud.Dlp.V2.QuasiId) \n\n public sealed class QuasiId : IMessage\u003cQuasiId\u003e, IEquatable\u003cQuasiId\u003e, IDeepCloneable\u003cQuasiId\u003e, IBufferMessage, IMessage\n\nReference documentation and code samples for the Google Cloud Data Loss Prevention v2 API class QuasiId.\n\nA column with a semantic tag attached. \n\nInheritance\n-----------\n\n[object](https://learn.microsoft.com/dotnet/api/system.object) \\\u003e QuasiId \n\nImplements\n----------\n\n[IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage-1.html)[QuasiId](/dotnet/docs/reference/Google.Cloud.Dlp.V2/latest/Google.Cloud.Dlp.V2.QuasiId), [IEquatable](https://learn.microsoft.com/dotnet/api/system.iequatable-1)[QuasiId](/dotnet/docs/reference/Google.Cloud.Dlp.V2/latest/Google.Cloud.Dlp.V2.QuasiId), [IDeepCloneable](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IDeepCloneable-1.html)[QuasiId](/dotnet/docs/reference/Google.Cloud.Dlp.V2/latest/Google.Cloud.Dlp.V2.QuasiId), [IBufferMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IBufferMessage.html), [IMessage](https://cloud.google.com/dotnet/docs/reference/Google.Protobuf/latest/Google.Protobuf.IMessage.html) \n\nInherited Members\n-----------------\n\n[object.GetHashCode()](https://learn.microsoft.com/dotnet/api/system.object.gethashcode) \n[object.GetType()](https://learn.microsoft.com/dotnet/api/system.object.gettype) \n[object.ToString()](https://learn.microsoft.com/dotnet/api/system.object.tostring)\n\nNamespace\n---------\n\n[Google.Cloud.Dlp.V2](/dotnet/docs/reference/Google.Cloud.Dlp.V2/latest/Google.Cloud.Dlp.V2)\n\nAssembly\n--------\n\nGoogle.Cloud.Dlp.V2.dll\n\nConstructors\n------------\n\n### QuasiId()\n\n public QuasiId()\n\n### QuasiId(QuasiId)\n\n public QuasiId(QuasiId other)\n\nProperties\n----------\n\n### CustomTag\n\n public string CustomTag { get; set; }\n\nA column can be tagged with a custom tag. In this case, the user must\nindicate an auxiliary table that contains statistical information on\nthe possible values of this column (below).\n\n### Field\n\n public FieldId Field { get; set; }\n\nRequired. Identifies the column.\n\n### HasCustomTag\n\n public bool HasCustomTag { get; }\n\nGets whether the \"custom_tag\" field is set\n\n### Inferred\n\n public Empty Inferred { get; set; }\n\nIf no semantic tag is indicated, we infer the statistical model from\nthe distribution of values in the input data\n\n### InfoType\n\n public InfoType InfoType { get; set; }\n\nA column can be tagged with a InfoType to use the relevant public\ndataset as a statistical model of population, if available. We\ncurrently support US ZIP codes, region codes, ages and genders.\nTo programmatically obtain the list of supported InfoTypes, use\nListInfoTypes with the supported_by=RISK_ANALYSIS filter.\n\n### TagCase\n\n public QuasiId.TagOneofCase TagCase { get; }"]]
