sdss/sdssdb
May 2025 – May 2026
5 Months active
Languages Used
PythonSQLJSONYAML
Technical Skills
Database DesignPeeweeSQLAlchemySchema ManagementBackend DevelopmentDatabase
Joel Brownstein
PROFILE
Joel Brownstein
Worked on the sdss/sdssdb repository to evolve its database schema and infrastructure, focusing on supporting complex astronomical data such as allspect and multiplex observations. Delivered new tables, refactored ORM models using Python and SQLAlchemy, and introduced features like coadd origin tracking and flexible MWM star data representation. Enhanced data integrity by standardizing primary keys and expanding field types, while implementing schema changes in both Peewee and SQL. Established CI/CD workflows with GitHub Actions to automate testing and releases, ensuring code quality and maintainability. The work emphasized scalable data modeling, robust schema management, and reliable processing for future SDSS data analyses.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
7Total
Bugs
0
Commits
7
Features
7
Lines of code
249,940
Activity Months5
Your Network
9 peopleShared Repositories
9
Tom DwellyMember
José Sánchez-GallegoMember
havok2063Member
imedanMember
johndonor3Member
Joel BrownsteinMember
Pramod GuptaMember
Sean-MorrisonMember
Michael BlantonMember
Work History
May 2026
2 Commits • 2 Features
May 1, 2026May 2026 monthly summary for sdssdb: Delivered data model enhancements for MWM Star files and Astra version tracking, and established CI/CD infrastructure to support higher code quality and faster releases. No critical bugs reported this month; focus was on preparing robust foundations for future feature work and reliable data processing.
2 Commits • 2 Features
May 1, 2026May 2026 monthly summary for sdssdb: Delivered data model enhancements for MWM Star files and Astra version tracking, and established CI/CD infrastructure to support higher code quality and faster releases. No critical bugs reported this month; focus was on preparing robust foundations for future feature work and reliable data processing.
May 2026
April 2026
2 Commits • 2 Features
Apr 1, 2026April 2026: Implemented two schema enhancements to improve data provenance and query flexibility in sdssdb. Coadd origin tracking added to the multiplex table (new 'coadd' column) to distinguish epoch vs daily coadds; has_mwmStar expanded to store multiple v_astra values as an array in AllSpec. No major bugs fixed; minor stabilization patches applied to support changes. Impact: clearer data provenance, richer data model, enabling complex queries and analytics; prepares groundwork for scalable SDSS data analyses. Technologies/skills demonstrated: database schema evolution, data modeling, versioned commits, maintainable migrations.
April 2026
2 Commits • 2 Features
Apr 1, 2026April 2026: Implemented two schema enhancements to improve data provenance and query flexibility in sdssdb. Coadd origin tracking added to the multiplex table (new 'coadd' column) to distinguish epoch vs daily coadds; has_mwmStar expanded to store multiple v_astra values as an array in AllSpec. No major bugs fixed; minor stabilization patches applied to support changes. Impact: clearer data provenance, richer data model, enabling complex queries and analytics; prepares groundwork for scalable SDSS data analyses. Technologies/skills demonstrated: database schema evolution, data modeling, versioned commits, maintainable migrations.
August 2025
1 Commits • 1 Features
Aug 1, 2025Aug 2025 highlights for sdss/sdssdb: Delivered a new data-tracking flag for spectroscopic observations by adding has_mwmStar to AllSpec, implemented in both Peewee and SQLAlchemy ORM configurations. The change was committed as 74056e14084c670516ad27f1fb515536beb87d64 with message 'has_mwmStar (#287)'. This cross-ORM schema enhancement improves data traceability for Mauna Kea/Mount Wilson star data, enabling more reliable downstream analytics and reporting.
1 Commits • 1 Features
Aug 1, 2025Aug 2025 highlights for sdss/sdssdb: Delivered a new data-tracking flag for spectroscopic observations by adding has_mwmStar to AllSpec, implemented in both Peewee and SQLAlchemy ORM configurations. The change was committed as 74056e14084c670516ad27f1fb515536beb87d64 with message 'has_mwmStar (#287)'. This cross-ORM schema enhancement improves data traceability for Mauna Kea/Mount Wilson star data, enabling more reliable downstream analytics and reporting.
August 2025
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for sdss/sdssdb: Delivered a database schema enhancement to support larger specobjid values and standardized primary keys, improving data scalability, integrity, and future maintenance. No explicit bug fixes documented this month; focus was on design evolution and code quality improvements.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for sdss/sdssdb: Delivered a database schema enhancement to support larger specobjid values and standardized primary keys, improving data scalability, integrity, and future maintenance. No explicit bug fixes documented this month; focus was on design evolution and code quality improvements.
May 2025
1 Commits • 1 Features
May 1, 2025Month: 2025-05. Focused on expanding the sdssdb database schema to support allspect and multiplex data within the sdss5db vizdb, delivering a robust foundation for integrated data storage and visualization. Key outcomes include new tables/models, ORM refactors for spectral and plate data, and schema definitions enabling stored data management in vizdb. This work enhances data accessibility for analytics and visualization, with measurable groundwork for performance and scalability improvements.
1 Commits • 1 Features
May 1, 2025Month: 2025-05. Focused on expanding the sdssdb database schema to support allspect and multiplex data within the sdss5db vizdb, delivering a robust foundation for integrated data storage and visualization. Key outcomes include new tables/models, ORM refactors for spectral and plate data, and schema definitions enabling stored data management in vizdb. This work enhances data accessibility for analytics and visualization, with measurable groundwork for performance and scalability improvements.
May 2025
Activity
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Quality Metrics
Correctness95.8%
Maintainability91.4%
Architecture92.8%
Performance88.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
JSONPythonSQLYAML
Technical Skills
Backend DevelopmentContinuous IntegrationDatabaseDatabase DesignDevOpsGitHub ActionsORMPeeweePythonPython DevelopmentPython programmingSQLSQLAlchemySchema Managementdata modeling
Repositories Contributed To
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