Consider Design. Design would determine the material and make of the dining table. Other dining furniture like a wine cabinet also follows this rule. Under this consideration you would need to think about what material would constitute your furniture. Will it be made of hardwood plastic glass or metal? What would be its make? Would it follow a minimalist or a Victorian classic style? These questions can be answered if you consider your personal taste and theme of your house of dining room. For example a minimalist dining room table would best fit dining areas with clean solid colors. Victorian dining room furniture add a touch of classic flair to an otherwise boring room. Consult designers or design books for this one.
Another core aspect of making your dining room look sizeable is the color palette. If you always believed that you were supposed to keep your spacially challenged rooms white then here is some wonderful news for you. If you don't want drab paint that is boring think about having a monochromatic interior design in a muted color or combine different colors which all produce the same intensity. For a scheme that is more colorful consider blues and greens that all have an equal intensity or if you prefer a soothing ambiance think about a monochromatic color scheme of pale blues. To add drama and depth work on painting one wall a deep intense tone - this gives it the impression of being further away along with adding an unusual charm. Pale colors will recede therefore making the room seem larger and blueish gray is a great decorative paint color for a small room. But then if that sounds too colorless don't despair cool colors like blues greens and purples also recede so you can use your beautiful shades without making the room appear small sized.
Just utilize an expansive dining table in the event that you have a requirement for central space for such things as a candles and centerpiece. In the event that you have just a little space for the table a circular table is superior to anything a rectangular one and a pedestal base can seat more than a base with three or four legs.