LISI categorization
| Degree interoperability | Status | Characteristic |
|---|---|---|
| Level 0 (L0) | Isolated | Interoperability at this level is limited to manual extraction and integration of data from various systems |
| Level 1 (L1) | Connected | Interoperability exists in a peer-to-peer form, with the simple exchange of electronic data such as text, email, graphics, and other homogenous data types |
| Level 2 (L2) | Functional | Local area networks enable data exchanges from systems that reside on the network. Logical data models are shared across systems. Data containing heterogeneous information are fused together (images with annotations) |
| Level 3 (L3) | Domain | Extensive networks connect different systems. Information exchange among different applications occurs via shared domain-based data models, thereby allowing for business rules and database-to-database interactions |
| Level 4 (L4) | Enterprise | Systems have the capabilities to use global information spanning multiple domains. Data and applications are fully shared and distributed. Advanced collaboration is possible |
| Degree interoperability | Status | Characteristic |
|---|---|---|
| Level 0 (L0) | Isolated | Interoperability at this level is limited to manual extraction and integration of data from various systems |
| Level 1 (L1) | Connected | Interoperability exists in a peer-to-peer form, with the simple exchange of electronic data such as text, email, graphics, and other homogenous data types |
| Level 2 (L2) | Functional | Local area networks enable data exchanges from systems that reside on the network. Logical data models are shared across systems. Data containing heterogeneous information are fused together (images with annotations) |
| Level 3 (L3) | Domain | Extensive networks connect different systems. Information exchange among different applications occurs via shared domain-based data models, thereby allowing for business rules and database-to-database interactions |
| Level 4 (L4) | Enterprise | Systems have the capabilities to use global information spanning multiple domains. Data and applications are fully shared and distributed. Advanced collaboration is possible |
Source(s): C4ISR, A. W. G. (1998). Levels of Information Systems Interoperability (LISI)
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