The use of SQL databases started plummeting with the advent of DynamoDB. The DynamoDB is pretty much being used as the replacement of SQL database. This replacement was made due to the key advantage which is, the DynamoDB is extremely fast and is highly scalable.
With the increase of use of this NoSQL database service, the industry demands candidates with DynamoDB knowledge. It is high time for the aspirants who seek bright future in the back-end field to be well-aware of this database. And, if you already are acknowledged with DynamoDB and your interview is heading near, then this list of few DynamoDB interview questions will help you crack the interview.
DynamoDB supports collection data types such as:
DynamoDB also supports Null values.
You can also construct a free-form conditional expression that combines multiple conditional clauses which also includes nested clauses.
Select the table from which you want to delete the Global Secondary index on the console, select the “indexes” tab under “Table items” and then click on the “Delete” button which is next to the delete index.
A Global Secondary Index can also be deleted using the Update Table API call.
A local secondary index is considered to be “local” because every partition of a local secondary index is scaled to a table partition which contains the same partition key.
They are in addition to the index key attributes and primary key attributes which are automatically projected.
Whenever you define a local secondary index, it is required to specify the attributes that are projected into the index.
Each index consists of a minimum of 3 attributes, and they are:
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