步骤 1：使用 JavaScript 创建 DynamoDB 表 - Amazon DynamoDB
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步骤 1：使用 JavaScript 创建 DynamoDB 表

在此步骤中，您将创建一个名为 Movies 的表。表的主键由以下属性组成：

  • year – 分区键。AttributeType 为 N，表示数字。

  • title – 排序键。AttributeType 为 S，表示字符串。

  1. 将以下程序复制并粘贴到名为 MoviesCreateTable.html 的文件中。 

    <!-- 
  Copyright 2010-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 
  This file is licensed under the Apache License, Version 2.0 (the "License").
  You may not use this file except in compliance with the License. A copy of
  the License is located at
 
  http://aws.amazon.com/apache2.0/
 
  This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
  CONDITIONS OF ANY KIND, either express or implied. See the License for the
  specific language governing permissions and limitations under the License.
-->
<html>
<head>
<script src="https://sdk.amazonaws.com/js/aws-sdk-2.7.16.min.js"></script>

<script>
AWS.config.update({
  region: "us-west-2",
  endpoint: 'http://localhost:8000',
  // accessKeyId default can be used while using the downloadable version of DynamoDB. 
  // For security reasons, do not store AWS Credentials in your files. Use Amazon Cognito instead.
  accessKeyId: "fakeMyKeyId",
  // secretAccessKey default can be used while using the downloadable version of DynamoDB. 
  // For security reasons, do not store AWS Credentials in your files. Use Amazon Cognito instead.
  secretAccessKey: "fakeSecretAccessKey"
});

var dynamodb = new AWS.DynamoDB();

function createMovies() {
    var params = {
        TableName : "Movies",
        KeySchema: [
            { AttributeName: "year", KeyType: "HASH"},
            { AttributeName: "title", KeyType: "RANGE" }
        ],
        AttributeDefinitions: [
            { AttributeName: "year", AttributeType: "N" },
            { AttributeName: "title", AttributeType: "S" }
        ],
        ProvisionedThroughput: {
            ReadCapacityUnits: 5,
            WriteCapacityUnits: 5
        }
    };

    dynamodb.createTable(params, function(err, data) {
        if (err) {
            document.getElementById('textarea').innerHTML = "Unable to create table: " + "\n" + JSON.stringify(err, undefined, 2);
        } else {
            document.getElementById('textarea').innerHTML = "Created table: " + "\n" + JSON.stringify(data, undefined, 2);
        }
    });
}

</script>
</head>

<body>
<input id="createTableButton" type="button" value="Create Table" onclick="createMovies();" />
<br><br>
<textarea readonly id= "textarea" style="width:400px; height:800px"></textarea>

</body>
</html>
    注意

    • 设置终端节点以指示您正在计算机上的 Amazon DynamoDB 中创建表。

    • 在 createMovies 函数中，您需要指定表名称、主键属性及其数据类型。

    • ProvisionedThroughput 参数是必填项；但 DynamoDB 的可下载版本将忽略此参数。（预置的吞吐量不在此教程的讨论范围内。）

  2. 在您的浏览器中打开 MoviesCreateTable.html 文件。

  3. 选择 Create Table (创建表)。

要了解有关管理表的更多信息，请参阅使用 DynamoDB 中的表和数据。