Good morning, I am writing an essay on file compression and I have written this sentence and I am not sure whether the first or second version would be correct.
The statement is:
"Lossless compression is essential as files which require all data to be present, such as a financial report or a database[...]"
Would "such as a financial report or database" be grammatically correct, or would "such as a financial report or a database" be correct?
Thank you for your help!