/**
 * System entities for \@microsoft/rayfin-core
 *
 * These represent built-in entities managed by the Rayfin platform backend.
 * They are readonly and can be referenced for foreign keys and querying,
 * but cannot be created, updated, or deleted through DAB.
 */
/**
 * Built-in User entity representing the system's user table.
 * This is a readonly entity managed by the Rayfin platform backend.
 * Only safe fields are exposed - no passwords or sensitive data.
 */
export declare class User {
    /** The unique identifier of the user. */
    readonly Id: string;
    /** The user's email address. */
    readonly Email: string;
}
/**
 * Set of system entity names that are always valid relationship targets.
 * These entities are managed by the Rayfin platform and do not need to be
 * included in user schema arrays.
 */
export declare const SystemEntityNames: Set<string>;
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