A gaming application stores scores for players in an Amazon DynamoDB table that has four...

"Condition": {

"ForAllValues:StringEquals": {

"dynamodb:LeadingKeys": ["${www.amazon.com:user_id}"],

"dynamodb:Attributes": ["user_name"]

}

}

"Condition": {

"ForAllValues:StringEquals": {

"dynamodb:LeadingKeys": ["${www.amazon.com:user_name}"],

"dynamodb:Attributes": ["user_id"]

}

}

"Condition": {

"ForAllValues:StringEquals": {

"dynamodb:LeadingKeys": ["${www.amazon.com:user_id}"],

"dynamodb:Attributes": ["user_name", "user_id"]

}

}

"Condition": {

"ForAllValues:StringEquals": {

"dynamodb:LeadingKeys": ["${www.amazon.com:user_name}"],

"dynamodb:Attributes": ["username", "userid"]

}

}