Variable-Length Records:Slotted Page Structure Block Header Records Size Entries Free Space Location End of Free Space Slotted page header contains: number of record entries end of free space in the block location and size of each record ■ Records can be moved around within a page to keep them contiguous with no empty space between them;entry in the header must be updated. Pointers should not point directly to record-instead they should point to the entry for the record in header. Database System Concepts-7th Edition 13.8 @Silberschatz,Korth and SudarshanDatabase System Concepts - 7 13.8 ©Silberschatz, Korth and Sudarshan th Edition Variable-Length Records: Slotted Page Structure ▪ Slotted page header contains: • number of record entries • end of free space in the block • location and size of each record ▪ Records can be moved around within a page to keep them contiguous with no empty space between them; entry in the header must be updated. ▪ Pointers should not point directly to record — instead they should point to the entry for the record in header