In theory, yes. But this would make the resulting Markdown pages a mess, apart from the fact that using plain text files as a database is just a very inefficient solution.
We’re currently building Logseq DB which is in very early alpha stages. You can read more about Logseq DB in the announcement on this forum and test out a very early alpha version at https://test.logseq.com.
One of the advantages of Logseq DB is that it uses SQLite for storage and has a much richer properties system (along with true block metadata like creation date, modified date, anything else you wish to add). Here you can read more about properties in Logseq DB (please note that Logseq DB is far from finished and that more functionality is added every day and some things aren’t final yet—especially in terms of UI).