The phrase "a database of previously" is correct and usable in written English.
It can be used when referring to a collection of data or information that has been gathered or stored from past instances or events.
Example: "The researchers created a database of previously collected samples to analyze trends over time."
Alternatives: "a repository of past" or "a collection of earlier".
The TRB is a database of previously used film titles which studios voluntarily check in order to ensure they do not borrow a rival organisation's moniker.
Nor does Backpage maintain a database of previously flagged images to automatically detect duplicates.
This can be achieved by maintaining a database of previously taken off-loading decisions along with the input parameters.
The originality checking area compares a submission against a range of previously published materials and a database of previously submitted assignments.
Once encoded, the iris recognition system must be able to reliably match the newly created template with a database of previously enrolled templates.
The newly encoded iris is compared to a database of previously created templates using a fractional Hamming Distance (HD) calculation, which is defined in (1).
A database of previously-published English translations of official edicts and memorials from nineteenth century China's Qing dynasty, spanning from the Macartney Mission in 1793 to the abdication of the last emperor in 1912.
Temin and her all-female staff are responsible for what they refer to as "the index", a database of individuals previously documented as perpetrators of sexual misconduct, violence and abuse.
An efficient method of solving this problem involves first selecting a set of keypoints in the scene which store an encoding of their local region, and then utilizing a sublinear-time search into a database of keypoints previously generated from the global map to identify places with common features.
In the patent application, Google details a process that would allow its algorithms to automatically detect troublesome text by comparing the writing to a database of phrases previously identified as "problematic".
The mitochondrial genome was also compared to a database of all previously sequenced seed plant mitochondrial genomes with BLAST to identify putatively functional conserved syntenic regions [1].
