Figured Bass Question

[Grazioso]

Another question for the experts, this time on figured bass. I want to make sure I'm reading it right, in this case from the score for Bach's BWV 54.

http://216.129.110.22/files/imglnks/usimg/1/1c/IMSLP01189-BWV0054.pdf

First chord, for example, is the 2, 4, 5, and 7 intervals above the printed bass note of Eb, therefore F Ab Bb D?

Intervals are always relative to the printed bass note in question, not the tonic of the key?

And, last but not least, would the keyboard player typically just play those numerically indicated notes in an appropriate voicing, or additionally include the bass instrument's Eb, the root of the chord?

[(poco) Sforzando]

Another question for the experts, this time on figured bass. I want to make sure I'm reading it right, in this case from the score for Bach's BWV 54.

http://216.129.110.22/files/imglnks/usimg/1/1c/IMSLP01189-BWV0054.pdf

1) First chord, for example, is the 2, 4, 5, and 7 intervals above the printed bass note of Eb, therefore F Ab Bb D?

2) Intervals are always relative to the printed bass note in question, not the tonic of the key?

3_ And, last but not least, would the keyboard player typically just play those numerically indicated notes in an appropriate voicing, or additionally include the bass instrument's Eb, the root of the chord?

1) Believe it or not, yes - and all those notes are represented in the string parts. It looks very dissonant, but what's actually happening is a V7 chord over a tonic pedal.

2) Relative to the bass.

3) He would include the bass note. Remember too that the cello and violone would be playing that one note as well; they all form part of the continuo group.

[Grazioso]

1) Believe it or not, yes - and all those notes are represented in the string parts. It looks very dissonant, but what's actually happening is a V7 chord over a tonic pedal.

2) Relative to the bass.

3) He would include the bass note. Remember too that the cello and violone would be playing that one note as well; they all form part of the continuo group.

Thanks! So that chord is assumed for the rest of the measure, and if so, is that because no other figures are indicated (which would normally mean a root position triad), or because, in this case, the upper voices continue to spell out the same harmony? Or both? 

Second measure's first chord is Ebsus4, second "chord" is just F over Eb? I read that "2" is apparently shorthand for 2 4 6, which would indicate Fm/Eb, but 2 4 6 is written out explicitly later in the measure.