The primary key for this table consists of Artist and SongTitle. You must specify values for these attributes.

Here are some key things to know about this PutItem example:

DynamoDB provides native support for documents, using JSON. This makes DynamoDB ideal for storing semistructured data, such as Tags. You can also retrieve and manipulate data from within JSON documents.

The Music table does not have any predefined attributes, other than the primary key (Artist and SongTitle).

Most SQL databases are transaction oriented. When you issue an INSERT statement, the data modifications are not permanent until you issue a COMMIT statement. With Amazon DynamoDB, the effects of a PutItem action are permanent when DynamoDB replies with an HTTP 200 status code (OK). 

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{

    TableName: "Music",

    Item: {

        "Artist":"No One You Know",

        "SongTitle":"Call Me Today",

        "AlbumTitle":"Somewhat Famous",

        "Year": 2015,

        "Price": 2.14,

        "Genre": "Country",

        "Tags": {

            "Composers": [

                  "Smith",

                  "Jones",

                  "Davis"

            ],

            "LengthInSeconds": 214

        }

    }

}