import { CreateTableQuery } from '../models/CreateTableQuery';
import { QualifiedName } from '../models/ValueComponent';
export type RelationConstraintKind = 'column-reference' | 'table-foreign-key';
export type RelationEvidenceKind = RelationConstraintKind | 'primary-key' | 'unique-key';
export type RelationConfidence = 'confirmed' | 'inferred' | 'unknown';
export interface RelationGraphEdge {
    childTable: string;
    parentTable: string;
    childColumns: string[];
    parentColumns: string[];
    constraintKind: RelationConstraintKind;
    constraintName: string | null;
    /**
     * Evidence behind the relation edge. v1 uses FK evidence, but callers can
     * keep the same edge shape when PK / UNIQUE inference is added later.
     */
    evidenceKind: RelationEvidenceKind;
    /**
     * Indicates whether the relation is directly confirmed or inferred from
     * broader schema evidence.
     */
    confidence: RelationConfidence;
    isSelfReference: boolean;
}
export interface RelationGraph {
    relations: RelationGraphEdge[];
    byChildTable: Map<string, RelationGraphEdge[]>;
    byParentTable: Map<string, RelationGraphEdge[]>;
    tableNames: Set<string>;
}
/**
 * Build a direction-aware relation graph from parsed CREATE TABLE statements.
 */
export declare function buildRelationGraphFromCreateTableQueries(queries: CreateTableQuery[]): RelationGraph;
/**
 * Return the known parent relations for a child table.
 */
export declare function getOutgoingRelations(graph: RelationGraph, childTable: string): RelationGraphEdge[];
/**
 * Return the known child relations for a parent table.
 */
export declare function getIncomingRelations(graph: RelationGraph, parentTable: string): RelationGraphEdge[];
export declare function getQualifiedNameText(value: QualifiedName): string;