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Topic orientation
Legacy system at a glance
The strongest research directions include Improvements on legacy software systems. Use the connected concepts below as starting points, not as a keyword checklist.
Research this topic
Explore the main themes, entities and connections around Legacy system. Start with the topic map, then use the sections below for research and deeper semantic analysis.
Explore this topic
Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.
Improvements on legacy software systems
12 related topics
Overview
45 related topics
Additional uses of the term legacy in computing
8 related topics
Problems posed by legacy computing
7 related topics
Key facts & relationships
High-confidence facts extracted from structured source data. Use them as anchors for further research.
Topics to explore
A structured outline of related entities, concepts and subtopics. Open any item to build a new map centered on it.Browse the full topic structure. Each item opens a new analysis centered on that subject.
Overview
- Computing
- Computer system
- Application Application software
- Source code
- Obsolete
- Frameworks Software framework
- Architecture Software architecture
- Automated tests Unit testing
- Refactoring
- Bugs Software bug
- Software rot
- Executable
- Compatibility layer
- Macintosh Apple Macintosh
- MacOS
- Classic environment Classic (Mac OS X)
- Win16
- Windows XP
- Windows on Windows
- Legacy ports Legacy port
- Instruction sets Instruction set
- .swf
- Adobe Flash
- Lotus 1-2-3
- Character encodings Character encoding
- EBCDIC
- Return on investment
- Vendor lock-in
- Change management
- Backward compatibility
Problems posed by legacy computing
Improvements on legacy software systems
- Application retirement
- Middleware Middleware (distributed applications)
- Print server
- Rich Text Format (RTF) Rich Text Format
- PostScript
- Telnet
- HTTP
- Proxy server
- Data repositories Information repository
- Model-driven Model-driven engineering
- Reverse Reverse engineering
- Forward engineering
NASA example
Perspectives on legacy code
- Software engineering
- Automated Automated testing
- Regression tests Regression testing
- Characterization tests Characterization test
Additional uses of the term legacy in computing
- Operating systems Operating system
- Software maintenance
- An advantage to nobody Pareto efficiency
- Computer mainframe Mainframe computer
- N-tier Multitier architecture
- 3-tier
- Architectures Computer architecture
- Virtualization Virtual machine
Brownfield architecture
- Brownfield Brownfield land
- Network architecture
Alternative view
- Dot com bubble
- Business logic
- Rewrite Rewrite (programming)
- Screen scraping
- Web services Web service
Advanced semantic analysis
Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.
How this topic connects Entity context
Quick relationship hints grouped by predicate. Useful for spotting recurring semantic connections around the current entity.See the strongest relationship patterns around the current topic before diving into the raw triples.
Legacy system
Top relations
related to Further reading · 40
Legacy system → Adam, Archived, Assess Heritage Systems, Bibcode, Bound To Fail, CIO Magazine, Comair's Christmas Disaster, Control Design Magazine, Danny Budzinski, Digital Computer, Directions, Early Phases, Enterprise Systems Journal, Grimson, Hein, How, IEEE Software, Issues, January, Jim McGee
related to Problems posed by legacy computing · 17
Legacy system → Budgetary, CEO, Comair, CPUs, Due, GB, However, If, Integration, IPv4, Legacy, Once, ROI, Some, There, These, This
related to NASA example · 15
Legacy system → According, Andreas, For, Hein, However, Munich, NASA's, Otherwise, Replacement, Space Shuttle, Technical University, The, These, This, Thus
related to Improvements on legacy software systems · 12
Legacy system → John McCormick, Most, PC, PC/Windows, PostScript, Printing, Rich Text Format, RTF, The, This, Web-based, Where
related to overview · 7
Legacy system → Backward, By, In, It, Legacy, The, While
related to External links · 4
Legacy system → Legacy, Media, Wikimedia Commons, Wiktionary-logo-en-v2
related to Alternative view · 3
Legacy system → Bjarne Stroustrup, Dot, There
related to Additional uses of the term legacy in computing · 2
Legacy system → For, The
related to Brownfield architecture · 2
Legacy system → Brownfield, Programmers
is a · 1
Legacy system → old method
Important terminology Word statistics
Frequent words and multi-word phrases across the lead, headings, infobox and body. Useful for terminology coverage.Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.
Important terminology
legacy systems system software may code hardware new often use also computer term application used older longer example business technology
Entity relationships Subject–Predicate–Object triples
Extracted RDF-like relationships with confidence and source. The table includes structured facts and lower-confidence contextual relations.| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Legacy system | is a | old method | 0.90 | text |
| return on investment challenges or vendor lock-in | instance of | the decision to keep an old system may be influenced by economic reasons | 0.80 | text |
| the inherent challenges of change management | instance of | the decision to keep an old system may be influenced by economic reasons | 0.80 | text |
| or a variety of other reasons other than functionality | instance of | the decision to keep an old system may be influenced by economic reasons | 0.80 | text |
| the TOPS database.The way that the system works is not well understood | instance of | and systems | 0.80 | text |
| tracking | instance of | secondary functions | 0.80 | text |
| reporting of user activity and/or automatic updating that creates | instance of | secondary functions | 0.80 | text |
| development | instance of | These capabilities must be integrated into various software life cycle phases | 0.80 | text |
| implementation | instance of | These capabilities must be integrated into various software life cycle phases | 0.80 | text |
| usage | instance of | These capabilities must be integrated into various software life cycle phases | 0.80 | text |
| or maintenance | instance of | These capabilities must be integrated into various software life cycle phases | 0.80 | text |
| Legacy system | related to Additional uses of the term legacy in computing | The | 0.60 | section |
No triples extracted yet.
Related concept clusters Concept neighborhoods
Clusters of nearby vocabulary surrounding the topic. Scan them for adjacent concepts and language you may have missed.These clusters group vocabulary that occurs around closely connected concepts in the source material.
Connections between topic areas Semantic bridges
Bridge nodes connect otherwise separate parts of the map. Expand a row to inspect the topic groups on each side.Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.
Map overview Semantic statistics
Number of nodes, edges, triples, density and central hubs. Use it to gauge the size and connectivity of the map.Legacy system
Nodes95
Edges94
Triples113
Avg. degree1.98
Density0.021053
Components1
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