Initial commit

crates/data/rtx-etl/src/lineage/data_lineage.rs

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+//! Data lineage information types.
+
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+
+use super::types::TransformationType;
+use crate::DataValue;
+
+/// Data lineage information for a specific record or dataset
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DataLineage {
+    /// Lineage identifier
+    pub lineage_id: String,
+    /// Source dataset/record
+    pub source: String,
+    /// Target dataset/record
+    pub target: String,
+    /// Transformation steps
+    pub transformations: Vec<TransformationStep>,
+    /// Lineage timestamp
+    pub timestamp: DateTime<Utc>,
+    /// Lineage metadata
+    pub metadata: HashMap<String, DataValue>,
+}
+
+/// Individual transformation step in lineage
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct TransformationStep {
+    /// Step identifier
+    pub step_id: String,
+    /// Step name
+    pub name: String,
+    /// Transformation type
+    pub transformation_type: TransformationType,
+    /// Input datasets
+    pub inputs: Vec<String>,
+    /// Output datasets
+    pub outputs: Vec<String>,
+    /// Transformation logic
+    pub logic: Option<String>,
+    /// Step timestamp
+    pub timestamp: DateTime<Utc>,
+}