[DB] What is the smallest size, in bytes, of a record from the following schema in a slotted page?

What is the smallest size, in bytes, of a record from the following schema in a slotted page? Assume that the record header is 4B, the boolean is 1B, and the date is 8B, disregarding word-alignment.

To determine the smallest size of a record from a given schema in a slotted page, we need to know the sizes of all the fields in the schema.

我们可以计算出记录的最小尺寸如下：

Components:

• To calculate the smallest size in bytes of a record from the given schema:

  Provided information:

• Record header: 4 bytes
• student (BOOLEAN): 1 byte
• birthday (DATE): 8 bytes
• name and state (VARCHAR): These depend on the actual length of the strings stored, but we can assume the smallest size is 1 byte for an empty string or a very short string (just the overhead for VARCHAR). For each VARCHAR field, assume 1 byte as the smallest possible size for now.
• Record header: 4 bytes
• student: 1 byte
• birthday: 8 bytes
• name (VARCHAR): 0 byte (minimum size for a short string)
• state (VARCHAR): 0 byte (minimum size for a short string)