a)
id filename title author year
(int(10)) (varchar(250)) (varchar(200)) (varchar(100)) (int(10))
b)
id parentName parentID index text_section_name
(int(10)) (varchar(100)) (int(10)) (int(10)) (varchar(50))
c)
id parentName parentID index text
(int(10)) (varchar(100)) (int(10)) (int(10)) (text)

Table 2: Metadata tables for storing activity information. (a) activity; (b) text_section; (c) text_block.

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