Abstract: A set of affinity metrics may be determined for a set of listings, each listing of the set of listings comprising data to be shared through a data exchange, wherein the set of affinity metrics includes a set of characteristics allowing identification of a listing having one or more characteristics in the set of characteristics. For each pair of listings of the set of listings, an affinity score can be calculated, using the set of affinity metrics, and stored as part of the record in an affinity store. One or more listings of the set of listings using the affinity score between the first listing of the set of listings and the one or more listings of the set of listings can be presented.

Abstract: Affinity-based listing recommendations are created and used in a public data exchange. Listings can be evaluated against one another for affinity or similarity such that users working with a particular dataset can be presented with other datasets that share an affinity. Affinity can be determined from both the dataset metadata as well as information from the dataset content. Calculation of affinity scores can be pre-computed and stored, in advance of use, or determined on-the-fly. Presentation of most-similar listings can be deterministic, can contain randomization, can employ time-decay, can be weighted, and can make use of a tiered-sum approach.

Abstract: An item inheritance system and method are provided. The item inheritance system can be employed to propagate access control information (e.g., an access control list) to one or more item(s), thus facilitating security of item(s). At least one of the item(s) is a compound item. The item inheritance system includes an input component that receives information associated with one or more items. The items can include container(s), object(s) and/or compound item(s). The system can be triggered by a change in security policy to the item(s), for example, adding and/or deleting a user's access to the item(s). Additionally, moving and/or copying a collection of items can further trigger the system. The system further includes a propagation component that propagates access control information to the item(s). For example, the propagation component can enforce the ACL propagation policies when a change to the security descriptor takes place at the root of a hierarchy.

Abstract: The present invention relates to a system and methodology to facilitate interoperability and compatibility between disparate data systems. In one aspect, a file transformation system is provided having at least one file associated with one or more unstructured properties. A file property handler manipulates the unstructured properties in accordance with one or more structured properties associated with a structured object store environment. If an unstructured file is to be operated in the context of a structured object store environment, a promotion operation is performed to update unstructured properties in the file with structured properties suitable for operation in the structured object store environment. If a promoted item were to be manipulated in the structured object store environment, a demotion operation or reverse transformation is performed to update properties in the file.