Z-Language: Formal Specification Language for Software Systems

Running head: Z-LANGUAGE
Z-Language
Name of the Student
Name of the University

1Z-LANGUAGE
Introduction:
The Z-Notation is considered as a formal specification language that are made for
modelling and describing the software systems. Standard mathematical notations like
axiomatic set theory, first-order predicate logic, and lambda calculus are used as the base of
Z-Notation.
The article is based on the Z-Notation description of Container Control System. The
system maintains the process of loading and unloading of goods in the container. Through the
Z-Notation the specifications of the proposed software is described by making Z-Schemas.
Z-Schema of Container Control System:
initContainer
id: ℙ containerID
containerID: ID ⇸ containerID
known = domContainer
initContainer
ΞTERMINAL
Known = ∅
intTerminal
name: ℙ terminalName
terminalName: NAME ⇸ TERMINALNAME
storage: ℕ
storage: ℕ
known = domterminal
intQue
que: ℕ
existingVehicle: ℕ
que≤2

2Z-LANGUAGE
intDeivery
vehicleID: ℕ
numberOfVehcile: ℕ
frieghtCompany: FRIEGHTCOMPANY
currentLoad: ℕ
ton: ℕ
qty: ℕ
numberOfVehcile ≤ 5
storage ≥ ton*qty
currentLoad ≤ storage′
intPickup
vehicleID: ℕ
vehicleID: VEHICLEID ⇸ Delivery
ton: ℕ
qty: ℕ
known = domvehicleid
Operation 1:
addTerminal
Δterminal1
terminalName?: NAME
storage?:
STORAGE
ton?:
TON
qty?:
QTY
∀i: 1...hwm. terminalName? ≠ terminalNames(i)
hwm′ = hwm+1
terminalNames′ = terminalNames⊕{hwm′ ↦ terminalName?}
storages′ = storages′{hwm′ ↦ storage?}
asas
as
Operation 2: