Techniques are disclosed relating to managing virtual data sources (VDSs), including creating and using VDSs. A virtual data source manager (VDSM) that is executing on a computer system may receive a request to generate a bitmap index for a dataset. The VDSM may then generate a bitmap index by ingesting the dataset into a data format of the bitmap index. The VDSM may further generate the bitmap index by performing a compression procedure on the ingested dataset to generate a plurality of data containers, where a given data container includes a respective compressed portion of the ingested dataset. After compressing the ingested dataset, the VDSM may then store the plurality of data containers in a set of binary trees (b-trees), where the set of b-trees is usable to respond to data requests for data of the bitmap index.