Various embodiments of the present technology generally relate to management of big data storage and data access control systems. In some embodiments, a data access system for use in multiple application service and multiple storage service environments comprises a sandbox database for users, wherein the sandbox database is a virtual database environment via which a user may access datasets according to one or more access policies. In some embodiments, the data access system receives a user request to access a dataset stored in a database into the sandbox environment, wherein the database is associated with the data access system. In response to the request, the data access system may retrieve the corresponding data from the database, determine any associated sandbox access policies, and generate an anonymized data table in the sandbox environment.