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PREDIX DMS (Others (RDMS System As A Service - PostgreSQL, Key-Value Store…

- - - - Define asset property + Relationship between assets and other modeling elements
      - Physical equipment is represented by an asset instance
      - Asset service domain objects are distinct
      - Represent info of domain objects
    - - Assets
        
        Hierarchical structure
        
        Associated with a classification or any number of custom modeling assets
        
        Have any number of customer-defined attribute
        
        Can "stand-alone" in the system
      - Classifications
        
        Arranged in a tree structure
        
        Provide a means to group similar assets and to track common attribute
        
        Point to multiple assets
        
        Attribute can be assigned at any level in the classification hierachy
      - Custom modeling objects
        
        Can be used to provide more info about assets
  - - - Enable developers to use JSON or GEL to retrieve data
    - - Retrieve historical information
    - - Translate JSON <-> Internal Graph Representation
    - - Apache Cassandra NoSQL graph DB
    - - Access asset data using REST API endponts
  - - - Retrieve the old values and the new values of the requested asset
    - - Retrieve an old value and a new value record for each element in a collection that has changed
    - - Enable/Disable (default) the asset audit history service
    - - Retrieve details about a single asset at a moment in time
- - - - Bind Application to Blobstore Service Instance
      - Unbind Application to Blobstore Service Instance
      - Delete Blobstore Service Instance
    - - GET Bucket Website
        
        Return the web site configuration of a store
        
        Permission
        
        GetBucketWebsite
        
        Syntax
        
        GET /?website HTTP/1.1
        Host: <store_name>.<host>
        Date: <Date>
        Authorization: <signatureValue>
      - Get Bucket ACL (Access Control List)
        
        Return the access control list for the BLOB store
        
        Syntax
        
        GET /?acl HTTP/1.1
        Host: <blobstore_url>
        Date: <Date>
        Authorization: <signatureValue>
      - GET Bucket (List objects)
        
        List the objects in the specified store
        
        Syntax
        
        GET / HTTP/1.1
        Host: <blobstore_url>
        Date: <Date>
        Authorization: <signatureValue>
      - List Bucket Multi-part Uploads
    - - Abort Multi-part Upload
      - DELETE Object
        
        Syntax
        
        DELETE /ObjectName HTTP/1.1
        Host: <blobstore_url>
        Date: <Date>
        Content-Length: <length>
        Authorization: <signatureValue>
      - GET Object
        
        Retrieve objects
        
        Permission
        
        Authorization header
        
        READ access to an anonymous user
        
        Syntax
        
        GET /ObjectName HTTP/1.1
        Host: <blobstore_url>
        Date: <Date>
        Authorization: <signatureValue>
        Range: bytes=byte_range
      - Get Object ACL
        
        Syntax
        
        GET /ObjectName?acl HTTP/1.1
        Host: <blobstore_url>
        Date: <Date>
        Authorization: <signatureValue>
        Range: bytes=byte_range
      - PUT Object
        
        Add an object to a store
        
        Permission
        
        WRITE
        
        Syntax
        
        PUT /ObjectName HTTP/1.1
        Host: <blobstore_url>
        Date: <Date>
        Authorization: <signatureValue>
    - - Split the source object
      - Initiate Multipart Upload
        
        Syntax
        
        POST /ObjectName?uploads HTTP/1.1
        Host: <blobstore_url>
        Date: <Date>
        Authorization: <signatureValue>
      - Upload Part
        
        Syntax
        
        PUT /ObjectName?partNumber=PartNumber&uploadId=UploadId HTTP/1.1
        Host: <blobstore_url>
        Date: <Date>
        Content-Length: <Size>
        Authorization: <signatureValue>
      - List Bucket Multipart Uploads
        
        Return a list of multipart uploads that are in progress (After Initiate but not Abort or Complete
        
        Limit 10000 multipart uploads in the list
        
        Syntax
        
        GET /ObjectName?uploadId=UploadId HTTP/1.1
        Host: <blobstore_url>
        Date: <Date>
        Authorization: <signatureValue>
      - Abort Multipart Upload
        
        Cancel the multipart upload of an object before a Complete
        
        Syntax
        
        DELETE /ObjectName?uploadId=UploadId HTTP/1.1
        Host: <blobstore_url>
        Date: <Date>
        Authorization: <signatureValue>
      - Complete Multipart Upload
        
        MUST
        
        Include the list of all parts of the object you are uploading
        
        List the part number and upload ID in PartNumber and ETag under each Part element
        
        Syntax
        
        POST /ObjectName?uploadId=UploadId HTTP/1.1
        Host: <blobstore_url>
        Date: <Date>
        Content-Length: <Size>
        Authorization: <signatureValue><CompleteMultipartUpload>
        <Part>
        <PartNumber>PartNumber</PartNumber>
        <ETag>ETag</ETag>
        </Part>
        ....
        </CompleteMultipartUpload>
- - - - Tag Format
        
        Timestamp (*)
        
        Datetime in UNIX epoch time
        
        Qualities (+)
        
        Quality of data
        
        0 - Bad quality
        
        1 - Uncertain quality
        
        2 - Not applicable
        
        3 - Good quality
        
        Attributes (+)
        
        Key/value pair
        
        Useful for filtering data
        
        Tag name (*)
        
        Name of tag
        
        Measurement (*)
        
        Reading (value) numeric
      - Acknowledge Status Code
        
        202 - Accepted Successfully
        
        400 - Bad request
        
        401 - Unauthorized
        
        413 - Request entity too large
        
        503 - Failed to ingest data
      - Data Types
        
        Ingestion JSON Input Type
        
        string
        
        boolean
        
        float
        
        null
        
        long
        
        Datapoint Type
        
        text
        
        null
        
        number
    - - time
        
        must start field
        
        end field optional
        
        time type
        
        Absolute time
        
        Relative time
        
        <value>
        
        integer > 0
        
        <time-unit>
        
        ms, s, mi, h, d, w, mm, y
        
        -ago
      - Data Aggregators
        
        Aggregator Parameter
        
        sampling
        
        unit
        
        ms, s, mi, h, d, w, mm, y
        
        value
        
        integer
        
        Range Aggregator
        
        align_sampling
        
        start_time
        
        align_start_time
        
        time_zone
        
        sampling
        
        Aggregators
        
        least_squares
        
        max
        
        interpolate
        
        min
        
        gaps
        
        percentile
        
        div
        
        rate
        
        diff
        
        sampler
        
        dev
        
        scale
        
        sum
        
        count
        
        avg
        
        trendmode
    - - REST APIs for querying and aggregating
        
        Retrieve all tags and attribute keys
        
        Add aggregate and interpolate data points in a given time window
        
        Filter by attribute values
        
        Query for the latest values (15 days)
        
        Query data specifying tags and a time window
        
        Delete tags and all associated data