Amazon Simpledb Update Condition Structure

{
  "type": "object",
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/amazon-simpledb/refs/heads/main/json-structure/amazon-simpledb-update-condition-structure.json",
  "name": "UpdateCondition",
  "description": " Specifies the conditions under which data should be updated. If an update condition is specified for a request, the data will only be updated if the condition is satisfied. For example, if an attribute with a specific name and value exists, or if a specific attribute doesn't exist. ",
  "properties": {
    "Name": {
      "allOf": [
        {
          "$ref": "#/components/schemas/String"
        },
        {
          "description": "The name of the attribute involved in the condition."
        }
      ]
    },
    "Value": {
      "allOf": [
        {
          "$ref": "#/components/schemas/String"
        },
        {
          "description": "The value of an attribute. This value can only be specified when the <code>Exists</code> parameter is equal to <code>true</code>."
        }
      ]
    },
    "Exists": {
      "allOf": [
        {
          "$ref": "#/components/schemas/Boolean"
        },
        {
          "description": "A value specifying whether or not the specified attribute must exist with the specified value in order for the update condition to be satisfied. Specify <code>true</code> if the attribute must exist for the update condition to be satisfied. Specify <code>false</code> if the attribute should not exist in order for the update condition to be satisfied."
        }
      ]
    }
  }
}