work at a designated level that is either a parent or a child
ISO 21511:2018(en), 3.15
parent element
work that is decomposed into two or more lower level elements of work
Note 1 to entry: The lower elements of work are called child elements.
ISO 21511:2018(en), 3.6
100 % rule
concept concerning the entire work required to be accomplished to achieve the project or programme scope captured in the work breakdown structure
(3.13)
Note 1 to entry: The 100 % rule applies to the parent and child elements. The child level of decomposition of a work breakdown structure element represents 100 % of the work applicable to the parent level.
ISO 21511:2018(en), 3.1
functional breakdown structure
decomposition of the functions necessary to perform the work elements of a project or programme
ISO 21511:2018(en), 3.2
functional breakdown structure
decomposition of the functions necessary to perform the work elements of a project or programme
ISO 21511:2018(en), 3.2
product breakdown structure
decomposition of the product into its components
ISO 21511:2018(en), 3.7
work breakdown structure
decomposition of the defined scope of the project or programme into progressively lower levels consisting of elements of work