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Created November 26, 2024 19:16

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Software Engineering :: Cloud :: AWS :: Amazon DynamoDB :: Concepts

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Software Engineering :: Cloud :: AWS :: Amazon DynamoDB :: Concepts

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Concepts

fundamentals

Table (stores items)
Item (record)

keys

Partition Key (@PK)
Sort Key (@SK)

primary keys

Simple Primary Key (== @PK)
Composite Primary Key (== @PK + @SK)

attributes

Attributes (columns: can differ per item and no need to define up front)

Secondary Indexes

Examples

Sessions Table

SessionId (PK)
Username (Attribute)
CreatedAt (Attribute)
ExpiresAt (Attribute)

Meta

Connections

HTTPS with AWS IAM for authentication (as opposed to a persistent connection such as with most relational databases)
NoSQL

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