Describe the differences between MySQLi and PDO, with reference to database connectivity using PHP. Give a detailed example showing how to use Server-Side Prepared Statements, for use with relational databases, using PHP to save multiple records to a database, and outline the advantages of the approach. Using PHP, demonstrate how to extract all records from a Relational Database table and save the records to a MongoDB collection. Please provide a clear description of the structure of the table and collection (name fields tyne etc)

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