If you study for the PMP with older material, or maintain a glossary, you probably carry a few terms that the PMBOK Guide no longer uses. Three of them are easy to prove: the sixth edition defines them in its glossary, and the eighth edition does not contain them at all. This post shows how that was checked and what to use instead.
The three terms
All three have a glossary entry in the PMBOK Guide, Sixth Edition. A full-text search of the eighth edition finds zero occurrences of each phrase, including with line-break hyphenation removed.
- Attribute Sampling. Sixth edition glossary: a method of measuring quality that consists of noting the presence or absence of some characteristic in each of the units under consideration. Eighth edition: 0 hits. The word “sampling” appears there only in a table title and in passing phrases, not as a named quality technique. See attribute sampling and statistical sampling for the older usage.
- Network Logic. Sixth edition glossary: all activity dependencies in a project schedule network diagram. Eighth edition: 0 hits. The glossary of the eighth edition defines the single relationship instead: a logical relationship is a dependency between two activities. See network logic.
- Project Management System. Sixth edition glossary: the aggregation of the processes, tools, techniques, methodologies, resources, and procedures to manage a project. Eighth edition: 0 hits. What the eighth edition does define is the project management information system (PMIS), an information system of tools and techniques to gather, integrate, and disseminate the outputs of project management processes. That is a narrower thing than the old “system”. See project management system.
What this does and does not mean
It does not mean the work went away. Inspecting a sample of units for a yes/no characteristic is still quality work, and schedule dependencies still exist. It means the eighth edition no longer names these ideas with these terms, so an exam question, a training slide or a glossary page that treats them as current PMBOK vocabulary is quoting an older edition.
It also does not mean the terms are wrong in general. Attribute sampling is a standard statistical quality method outside the PMBOK. The point is narrower: check vocabulary against the edition you are examined or audited on.
How to check this yourself
PMI members have digital access to the eighth edition. Search the text for each of the three phrases; the count for each should be zero. Then open the glossary and look up “Logical relationship” and “Project management information system (PMIS)”. PMI also publishes the table of contents of the eighth edition as a free PDF, but it lists chapter and section titles only, so it cannot confirm the absence of a glossary term. That check needs the full text. The sixth edition entries are in its glossary under the three names above.
The same pattern shows up in other terms. For a schedule-side example of a structural change rather than a vocabulary change, see PMBOK 8 Cut the Schedule Processes From Six to Three.
Sources
- PMBOK Guide, Eighth Edition, table of contents (PDF, PMI)
- PMBOK Guide overview page (PMI)
- A Guide to the Project Management Body of Knowledge (PMBOK Guide), Sixth Edition, Glossary: Attribute Sampling, Network Logic, Project Management System
- A Guide to the Project Management Body of Knowledge (PMBOK Guide), Eighth Edition, Glossary: Logical relationship, Project management information system (PMIS). Full-text search, September 2026
By Tom, PMP-certified since 2004. Last updated: September 2026.