The existing main decentralized storage solutions like filecoin only provide storage module. AFAIK, CATA is not limited to a specific storage module (e.g.file system or database). The idea is to develop a big decentralized data system that provide flexible, scalable and practical data management services for upper layer.
Apart from decentralized storage system, CATA also has huge support for NFTs and support flow blockchain. flow is very much popular these days because of its NFTs support.