/**
 * Database Analyzer
 * Analyzes database schema and generates documentation
 */
export interface TableInfo {
    name: string;
    columns: ColumnInfo[];
    indexes: IndexInfo[];
    foreignKeys: ForeignKeyInfo[];
    primaryKey: string[];
    rowCount?: number;
}
export interface ColumnInfo {
    name: string;
    type: string;
    nullable: boolean;
    defaultValue?: string;
    isPrimaryKey: boolean;
    isForeignKey: boolean;
    comment?: string;
}
export interface IndexInfo {
    name: string;
    columns: string[];
    isUnique: boolean;
    type: string;
}
export interface ForeignKeyInfo {
    name: string;
    column: string;
    referencedTable: string;
    referencedColumn: string;
    onDelete?: string;
    onUpdate?: string;
}
export interface DatabaseSchema {
    databaseName: string;
    databaseType: 'mysql' | 'postgresql' | 'sqlserver' | 'oracle' | 'sqlite';
    tables: TableInfo[];
    views: string[];
    procedures: string[];
    triggers: string[];
    analyzedAt: string;
}
export interface RelationshipInfo {
    fromTable: string;
    fromColumn: string;
    toTable: string;
    toColumn: string;
    type: 'one-to-one' | 'one-to-many' | 'many-to-many';
}
/**
 * Generate Mermaid ERD from schema
 */
export declare function generateERD(schema: DatabaseSchema): string;
/**
 * Generate Data Dictionary markdown
 */
export declare function generateDataDictionary(schema: DatabaseSchema): string;
/**
 * Analyze relationships between tables
 */
export declare function analyzeRelationships(schema: DatabaseSchema): RelationshipInfo[];
/**
 * Extract business entities from schema
 */
export declare function extractBusinessEntities(schema: DatabaseSchema): string[];
/**
 * Generate database schema markdown
 */
export declare function generateSchemaMarkdown(schema: DatabaseSchema): string;
export declare class DatabaseAnalyzer {
    /**
     * Parse SQL schema file and extract structure
     */
    parseSchemaSQL(sql: string, dbType?: 'mysql' | 'postgresql'): DatabaseSchema;
    /**
     * Parse table definition
     */
    private parseTableDefinition;
    /**
     * Generate all documentation from schema
     */
    generateDocumentation(schema: DatabaseSchema): {
        schemaMarkdown: string;
        dataDictionary: string;
        erdDiagram: string;
    };
}