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Table 3 Data types used for HERV data

From: DRUMS: Disk Repository with Update Management and Select option for high throughput sequencing data

Column

MySQL properties

DRUMS properties

Chromosome

TINY INT, primary key

1 byte, key part 1

Start-position on chromosome

INT, primary key

4 byte, key part 2

End-position on chromosome

INT, primary key

4 byte, key part 3

Start-position on HERV

SMALL INT, primary key

2 byte, key part 4

End-position on HERV

SMALL INT, primary key

2 byte, key part 5

Id of referenced HERV

SMALL INT, primary key

2 byte, key part 6

Strand on chromosome

TINY INT, primary key

1 byte, key part 7

E-value

DOUBLE

4 byte, value part 1

  1. Used data types in MySQL and DRUMS for HERV data. All columns being part of the primary key are indexed.