DCA Access Standard Security Program (DASSP) On July 19, 2005, the Transportation Security Administration (TSA) released an interim final rule that allows certain general aviation aircraft to apply for access to Ronald Reagan Washington National Airport (DCA) under the DCA Access Standard Security Program (DASSP).
The basic operations that can be performed on a binary search tree data structure, are the following 1  â. Insert â Inserts an element in a tree/create a tree. 2  Search â Searches an element in a tree. 3  Preorder Traversal â Traverses a tree in a pre-order manner. 4  Inorder Traversal â Traverses a tree in an in-order manner.
The most basic operations that programs can perform on a file are: 1  Create a new file. 2  Change the access permissions and attributes of a file. 3  Open a file, which makes the file contents available to the program. 4  Read data from a file. 5  Write data to a file. 6  Close a file, terminating the association between it and the program.