Abstract: Aspects of the present disclosure provide techniques for data projection. Embodiments include receiving a schema defining a data projection, wherein the schema references data items from a plurality of data sources. Embodiments include receiving, based on the schema, a plurality of data events related to the data projection. Embodiments include loading information associated with the plurality of data events into a graph database based on the schema. Embodiments include determining that one or more completeness rules associated with the schema are satisfied based on the information associated with the plurality of data events. Embodiments include providing, based on the determining that the one or more completeness rules associated with the schema are satisfied, the information associated with the plurality of data events from the graph database to a data projection object for consumption by one or more services.