Atomicity, a property of an S-expression, in a symbolic language like Lisp, to describe whether an expression is made of atoms (numbers or symbols) or is a list of S-expressions
Atomicity or Consistency in software, in a database transaction, either all or none of the update becomes available to anyone beyond the user or the application performing the update.
Atomicity: If the particular vectored I/O implementation supports atomicity, a process can write into or read from a set of buffers to or from a file without risk that another thread or process might perform I/O on the same file between the first process' reads or writes, thereby corrupting the file or compromising the integrity of the input
These protocols and services together ensure automatic activation, registration, propagation and atomic termination of Web Services.