Editing PDMS/Requirements (section)

== 4. System Features ==

<span id="rdf-star-data-model"></span>
=== 4.1 RDF-Star Data Model and Storage ===

===== REQ-RDF-1: Triple Pattern Support =====
* The system MUST:
** Support basic RDF-Star triple patterns
** Provide basic ACID guarantees for local operations
** Support basic named graphs
** Implement basic schema mediation
** Handle basic concurrent operations

* The system SHOULD:
** Support advanced RDF-Star features including nested assertions
** Provide comprehensive ACID guarantees across distributed operations
** Support advanced context management
** Implement sophisticated schema mediation
** Handle complex concurrent modifications

===== REQ-IDX-1: Indexing Capabilities =====
* The system MUST:
** Implement basic indexing strategies
** Support basic data locality
** Provide basic replication
** Maintain basic index statistics

* The system SHOULD:
** Implement advanced indexing strategies
** Support sophisticated locality-preserving functions
** Provide intelligent selective replication
** Implement adaptive index maintenance

<span id="query-processing"></span>
=== 4.2 Query Processing and Routing ===

===== REQ-QUERY-1: SPARQL-Star Support =====
* The system MUST:
** Support full SPARQL-Star syntax and semantics
** Implement basic cost-based optimization
** Support parallel execution
** Handle partial results
** Provide incremental streaming
** Track basic execution statistics

* The system SHOULD:
** Implement advanced optimization
** Support dynamic workload redistribution
** Provide comprehensive metrics
** Include detailed progress estimation

===== REQ-DIST-QUERY-1: Distributed Processing =====
* The system MUST:
** Decompose queries into subqueries
** Implement basic subquery placement
** Handle distributed joins
** Support basic aggregation
** Implement basic sorting
** Provide reliable result assembly

* The system SHOULD:
** Optimize subquery placement
** Implement sophisticated join strategies
** Support early pruning
** Provide advanced algorithms

<span id="content-discovery"></span>
=== 4.3 Decentralized Content Discovery ===

===== REQ-DISC-1: Content Management =====
* The system MUST:
** Support basic semantic search capabilities

* The system SHOULD:
** Index basic content metadata
** Handle basic content updates
** Support advanced metadata extraction
** Implement sophisticated algorithms
** Provide detailed tracking
** Support faceted navigation

<span id="blockchain-interface"></span>
=== 4.4 Blockchain Query Interface ===

===== REQ-CHAIN-1: Blockchain Integration =====
* The system MUST:
** Support basic RML mapping

* The system SHOULD:
** Support multiple blockchain types
** Support advanced mapping features
** Implement optimized synchronization
** Provide reorganization handling
** Support real-time updates

<span id="data-consistency"></span>
=== 4.5 Data Consistency and Distribution ===

===== REQ-CONS-1: Consistency Management =====
* The system MUST:
** Implement basic eventual consistency
** Provide basic conflict detection
** Support basic replication
** Handle basic concurrent updates

* The system SHOULD:
** Support configurable consistency levels
** Implement advanced conflict resolution
** Provide strong consistency guarantees
** Support optimistic replication

===== REQ-NET-1: Network Management =====
* The system MUST:
** Implement basic P2P topology
** Handle basic network partitions
** Support basic query routing
** Provide basic load balancing

* The system SHOULD:
** Implement hybrid topology
** Support advanced partition handling
** Provide topology-aware optimization
** Handle complex churn patterns

<span id="nonfunctional-requirements"></span>