Abstract: Techniques are described for using permission data objects to control user access to business data objects. A permission data object identifies a group affiliation associated with a user and a business object type (or family of business data objects) to which the permission object controls access. A permission object includes a permission attribute and a permission value. A user who has the group affiliation that is identified in the permission object is permitted to access a particular business data object of the business object type when the value of the permission attribute in the permission data object is consistent with the value of a corresponding attribute in the particular business data object to which the user seeks access.

Abstract: A tail rotor for a remotely controlled toy helicopter includes a pitch control clevis rotatably mounted on a drive mast and including two side links including a member having an oval tunnel formed at its open end, and a hollow cylinder distal the side links; and a rotor blade assembly including a hub rotatably mounted on an end of the drive mast, two opposite yokes mounted on the hub and each having a pitch link mounted in the oval tunnel and moveably confined therein, and two rotary blades secured to the yoke. The clevis and the rotor blade assembly are adapted to rotate as the drive mast rotates. A linking mechanism is formed by the pitch links and the side links for changing a pitch of the blades and further horizontally changing a direction of a nose of the helicopter while the helicopter is hovering. The invention can increase maneuverability.

Abstract: Techniques are described for using permission data objects to control user access to business data objects. A permission data object identifies a group affiliation associated with a user and a business object type (or family of business data objects) to which the permission object controls access. A permission object includes a permission attribute and a permission value. A user who has the group affiliation that is identified in the permission object is permitted to access a particular business data object of the business object type when the value of the permission attribute in the permission data object is consistent with the value of a corresponding attribute in the particular business data object to which the user seeks access.

Abstract: Systems and techniques to provide data in a generalized data format. In a commercial transaction environment, a generalized data handler may access business object data. The business object data may include attribute data for one or more attributes of a desired commercial transaction. The generalized data handler may retrieve metadata from the business object data, and may construct a generalized data structure for the attribute data using the metadata. The generalized data handler may parse the attribute data into the generalized data structure, which may then be exported to an external application.