(Scope: Nineteenth century to present with some citations as old as 1741)
Avery Index is the most comprehensive databases for finding articles in the field of architecture. It is maintained by our own Avery Library, one of the largest architecture libraries in the world. Other topics covered by Avery index include archaeology, landscape architecture, interior design, decorative arts, garden history, historic preservation, urban planning and design, real estate development and environmental studies. Because this databases is so comprehensive, it is your best bet when conducting research in architecture and adjacent fields.
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You can access Avery Index through two different vendors - each have their strengths and weaknesses.
EBSCO
Proquest
When searching both databases you may notice that one or the other returns more results. This is due to the frequency of updating on the part of Proquest and Ebsco. They receive the exact same index data, and generally speaking the results should be the same.
There are even more databases in this discipline to explore. Follow this link for articles and other resources in Art, Architecture and Applied Arts.