{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:YPBBV5LQEPR3RP4JQNKYPQXQHC","short_pith_number":"pith:YPBBV5LQ","schema_version":"1.0","canonical_sha256":"c3c21af57023e3b8bf89835587c2f038ada11f3e370fd20720949c1eb42a2b1c","source":{"kind":"arxiv","id":"1509.06390","version":1},"attestation_state":"computed","paper":{"title":"Exchange-Repairs: Managing Inconsistency in Data Exchange","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DB","authors_text":"2), (2) LogicBlox Inc, 3) ((1) University of California Santa Cruz, (3) IBM Research - Almaden), Balder ten Cate (1, Phokion G. Kolaitis (1, Richard L. Halpert (1)","submitted_at":"2015-09-21T20:25:18Z","abstract_excerpt":"In a data exchange setting with target constraints, it is often the case that a given source instance has no solutions. In such cases, the semantics of target queries trivialize. The aim of this paper is to introduce and explore a new framework that gives meaningful semantics in such cases by using the notion of exchange-repairs. Informally, an exchange-repair of a source instance is another source instance that differs minimally from the first, but has a solution. Exchange-repairs give rise to a natural notion of exchange-repair certain answers (XR-certain answers) for target queries. We show"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1509.06390","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2015-09-21T20:25:18Z","cross_cats_sorted":[],"title_canon_sha256":"d384f69eca9d0c796aa7546cdc961bbd2cd3b5d4fb0605a15014ca348943d8d8","abstract_canon_sha256":"35efe3ddafc8b453f32df46964bd2f81828004f325ebdc87b66fa3eff7c29f4b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:32:20.445774Z","signature_b64":"cxoBeLALEec7vOzGRB2QK0RkI9I/dBAsR2NI9lTtwHrMQU5wbQ+dTMzmQQOTJVDc9gj0JSYA9Advel2gK8XMCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c3c21af57023e3b8bf89835587c2f038ada11f3e370fd20720949c1eb42a2b1c","last_reissued_at":"2026-05-18T01:32:20.445112Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:32:20.445112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Exchange-Repairs: Managing Inconsistency in Data Exchange","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DB","authors_text":"2), (2) LogicBlox Inc, 3) ((1) University of California Santa Cruz, (3) IBM Research - Almaden), Balder ten Cate (1, Phokion G. Kolaitis (1, Richard L. Halpert (1)","submitted_at":"2015-09-21T20:25:18Z","abstract_excerpt":"In a data exchange setting with target constraints, it is often the case that a given source instance has no solutions. In such cases, the semantics of target queries trivialize. The aim of this paper is to introduce and explore a new framework that gives meaningful semantics in such cases by using the notion of exchange-repairs. Informally, an exchange-repair of a source instance is another source instance that differs minimally from the first, but has a solution. Exchange-repairs give rise to a natural notion of exchange-repair certain answers (XR-certain answers) for target queries. We show"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.06390","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1509.06390","created_at":"2026-05-18T01:32:20.445206+00:00"},{"alias_kind":"arxiv_version","alias_value":"1509.06390v1","created_at":"2026-05-18T01:32:20.445206+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.06390","created_at":"2026-05-18T01:32:20.445206+00:00"},{"alias_kind":"pith_short_12","alias_value":"YPBBV5LQEPR3","created_at":"2026-05-18T12:29:50.041715+00:00"},{"alias_kind":"pith_short_16","alias_value":"YPBBV5LQEPR3RP4J","created_at":"2026-05-18T12:29:50.041715+00:00"},{"alias_kind":"pith_short_8","alias_value":"YPBBV5LQ","created_at":"2026-05-18T12:29:50.041715+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/YPBBV5LQEPR3RP4JQNKYPQXQHC","json":"https://pith.science/pith/YPBBV5LQEPR3RP4JQNKYPQXQHC.json","graph_json":"https://pith.science/api/pith-number/YPBBV5LQEPR3RP4JQNKYPQXQHC/graph.json","events_json":"https://pith.science/api/pith-number/YPBBV5LQEPR3RP4JQNKYPQXQHC/events.json","paper":"https://pith.science/paper/YPBBV5LQ"},"agent_actions":{"view_html":"https://pith.science/pith/YPBBV5LQEPR3RP4JQNKYPQXQHC","download_json":"https://pith.science/pith/YPBBV5LQEPR3RP4JQNKYPQXQHC.json","view_paper":"https://pith.science/paper/YPBBV5LQ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1509.06390&json=true","fetch_graph":"https://pith.science/api/pith-number/YPBBV5LQEPR3RP4JQNKYPQXQHC/graph.json","fetch_events":"https://pith.science/api/pith-number/YPBBV5LQEPR3RP4JQNKYPQXQHC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YPBBV5LQEPR3RP4JQNKYPQXQHC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YPBBV5LQEPR3RP4JQNKYPQXQHC/action/storage_attestation","attest_author":"https://pith.science/pith/YPBBV5LQEPR3RP4JQNKYPQXQHC/action/author_attestation","sign_citation":"https://pith.science/pith/YPBBV5LQEPR3RP4JQNKYPQXQHC/action/citation_signature","submit_replication":"https://pith.science/pith/YPBBV5LQEPR3RP4JQNKYPQXQHC/action/replication_record"}},"created_at":"2026-05-18T01:32:20.445206+00:00","updated_at":"2026-05-18T01:32:20.445206+00:00"}