PrerequisitesLearning ObjectivesLangChain FundamentalsPrompt Templates and ChainsPrompt TemplatesChainsWhy Prompt Templates and Chains MatterMemory and Context ManagementShort-Term Context: Managing Recent InteractionsLong-Term Context: Persisting Relevant InformationContext Injection as a Design PatternFull-History Context Injection (Pattern)Windowed Context Injection (Pattern)Fact Store or Knowledge-Triple Memory (Pattern)Why Memory MattersLangChain Agents OverviewHow Agents WorkBenefits of Using AgentsWhen a Single Agent Is Not EnoughModel and Tool IntegrationPlugging in Tools (APIs, Databases, Calculators)How Tools WorkRAG Integration with ChainsHow Retrieval Works in LangChainExample: Using a Vector Store for RetrievalWhy Retrieval MattersTool Use Cases in Different IndustriesHealthcareFinanceRetailQuality and Safety MechanismsCommon Issues in Model ResponsesReal-World ImpactPrompt Augmentation for SafetyTechniques for Prompt AugmentationExample: Safe SummarizationReal-World ApplicationsBenefits of Prompt AugmentationImplementing GuardrailsTechniques for Implementing GuardrailsExample: Guardrails with Output ValidationReal-World ApplicationsComparison: Without Guardrails Versus with GuardrailsQualitatively Assessing LLM Responses (Quality, Safety, and Hallucination Issues)A Practical Evaluation Workflow for LLM OutputsDefine Quality in an Exam-Aligned WayDefine and Detect HallucinationsAssess Safety and Policy Compliance in OutputsBuild a Qualitative Scoring Rubric You Can ReuseA Databricks-Oriented Test Set StrategyWriting Reviewer Notes That Drive Engineering FixesCommon Qualitative Pitfalls and How to Avoid ThemWriting Metaprompts to Minimize Hallucinations or Data LeakageWhat a Metaprompt Is—and Isn’tWhy Metaprompts Matter for Hallucination ControlCommon Metaprompt Objectives in Databricks ApplicationsStructure of an Effective MetapromptPreventing Data Leakage with MetapromptsMetaprompts and Prompt Injection ResistanceTesting and Iterating on MetapromptsCommon Metaprompt MistakesAgent Frameworks and Multi-Agent SystemsMulti-Stage Reasoning AgentsDesigning Agent Prompt TemplatesMulti-Agent System ArchitectureCreating Tools Needed to Extract Data for Retrieval TasksWhy Tools Are Critical for Retrieval TasksTool Categories Commonly Used in RAG SystemsDesigning a Retrieval Tool: Principles and ConstraintsTools and Retrievers: How They Work TogetherAdding Preprocessing to Extraction ToolsTool Design for Safety and GovernanceWhen to Use Tools Versus Prompt InstructionsSummary of Tool Creation for RetrievalSummaryPractice Multiple-Choice QuestionsHands-On Lab: Building a Retrieval-Augmented GenAI AppScenarioObjective