Patent ID: 11941014
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. A method, comprising:
storing, by a metadata service of a distributed database to one or more metadata storage resources, first metadata descriptive of a table comprising a plurality of data points, wherein the first metadata is associated with a version number in a logical sequence of metadata versions of the table, wherein individual ones of the metadata versions indicate a schema of the table including columns of the table and data types of the columns;
determining, by the distributed database, one or more metadata updates for the table;
storing, by the metadata service, data indicative of the one or more metadata updates, wherein the one or more metadata updates are associated with an additional version number higher than the version number in the logical sequence of metadata versions of the table;
determining, by the metadata service responsive to a read request, a most recent version number that has been stored in the one or more metadata storage resources, wherein the most recent version number comprises the version number or the additional version number; and
returning, by the metadata service responsive to the read request, the first metadata or second metadata comprising the one or more metadata updates based at least in part on the most recent version number.