ossie

Apache Ossie, industry wide specification effort to standardize how we exchange semantic metadata across analytics, AI and BI platforms, providing a vendor neutral, single source of truth for semantic data

49 articles 1.1k View on GitHub ↗
49 articles
Apache Ossie Roadmap: Future Specification Features and Semantic Data Model Enhancements

Explore the Apache Ossie roadmap for future Apache Ossie specification features. Discover Dataset Abstraction, Semantic Query Language, AI-Native Semantic Layers, and more.

roadmap
Jul 26, 2026
Naming Rules for Identifiers in Apache OSSIE: Case Sensitivity and Quoting

Discover Apache OSSIE identifier naming rules. Learn how case sensitivity and quoting affect your names, following ANSI-SQL conventions for unquoted and double-quoted identifiers.

api-reference
Jul 26, 2026
How Apache Ossie Supports Composite Primary Keys with Multiple Columns

Apache Ossie supports composite primary keys using ordered arrays of column names. Learn how Ossie preserves order across relationships and conversions for multi-column keys.

how-to-guide
Jul 26, 2026
How to Contribute New Features or Changes to the Apache Ossie Specification

Contribute to the Apache Ossie specification by proposing changes on the dev mailing list, submitting a pull request, and getting PPMC approval. Learn the merge process.

how-to-guide
Jul 26, 2026
How to Extend Ossie with New Vendor-Specific Attributes and Extensions

Extend Ossie's vendor-agnostic core model with proprietary metadata using JSON. Learn how to implement custom extensions and converters for seamless data management.

how-to-guide
Jul 26, 2026
How Ossie Converters Handle Dialect-Specific Transformations: GoodData, Salesforce, and dbt

Explore how Ossie converters like GoodData, Salesforce, and dbt manage dialect-specific transformations, translating SQL dialects for target platforms and ensuring data compatibility.

deep-dive
Jul 26, 2026
How Field Expressions and Calculated Fields Work in the Ossie Expression Language

Understand how Ossie expression language uses field expressions and calculated fields. Learn about SQL fragments, regex patterns, arithmetic operators, and aggregate functions.

how-to-guide
Jul 26, 2026
Best Practices for Organizing Multiple Datasets in an Apache Ossie Semantic Model

Organize multiple datasets in Apache Ossie semantic models using best practices. Store data, distinguish types, and validate with JSON schema for a lossless Salesforce roundtrip.

best-practices
Jul 26, 2026
How to Validate Ossie Semantic Models: Tools and Methods Explained

Discover tools and methods to validate Ossie semantic models. Learn about the Python validator in the Apache Ossie repository for comprehensive checks and specification conformance.

how-to-guide
Jul 26, 2026
Apache Ossie Ontology Specification and Core Logical Layer: Architecture Explained

Explore the Apache Ossie ontology specification and core logical layer architecture. Understand how these layers define business concepts and analytical datasets, linked by ontology mappings.

architecture
Jul 26, 2026
Ossie dbt MSI Conversion Issues: Handling Lossy Transformations Between Formats

Discover Ossie dbt MSI conversion issues. Learn how lossy transformations between formats can impact semantic granularity and explore solutions for accurate data mapping.

deep-dive
Jul 26, 2026
How to Define Metrics with Aggregate Expressions in the Ossie Specification

Learn how to define metrics using aggregate expressions like SUM and COUNT in the Apache Ossie specification. Master quantitative business calculations across datasets.

tutorial
Jul 26, 2026

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