Struct rusoto_dynamodbstreams::KeySchemaElement
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pub struct KeySchemaElement { pub attribute_name: String, pub key_type: String, }
Represents a single element of a key schema. A key schema specifies the attributes that make up the primary key of a table, or the key attributes of an index.
A KeySchemaElement
represents exactly one attribute of the primary key. For example, a simple primary key (partition key) would be represented by one KeySchemaElement
. A composite primary key (partition key and sort key) would require one KeySchemaElement
for the partition key, and another KeySchemaElement
for the sort key.
The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from DynamoDB's usage of an internal hash function to evenly distribute data items across partitions, based on their partition key values.
The sort key of an item is also known as its range attribute. The term "range attribute" derives from the way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key value.
Fields
attribute_name: String
The name of a key attribute.
key_type: String
The attribute data, consisting of the data type and the attribute value itself.
Trait Implementations
impl Default for KeySchemaElement
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fn default() -> KeySchemaElement
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Returns the "default value" for a type. Read more
impl Debug for KeySchemaElement
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fn fmt(&self, __arg_0: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more
impl Clone for KeySchemaElement
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fn clone(&self) -> KeySchemaElement
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more