Ильин, Игорь Васильевич. Базы данных: учебное пособие / И. В. Ильин, О. Ю. Ильяшенко; Санкт-Петербургский политехнический университет Петра Великого. — Санкт-Петербург: ПОЛИТЕХ-ПРЕСС, 2020 (Санкт-Петербург, 2021). — 1 файл (116 Мб). — Загл. с титул. экрана. — Рез. на англ. яз. — Электронная копия печатной публикации 2020 г. — Доступ по паролю из сети Интернет (чтение, печать). — <URL:http://elib.spbstu.ru/dl/2/id20-334.pdf>. — DOI 10.18720/SPBPU/2/id20-334. — Текст: электронный
|
Period
|
Read
|
Print
|
Copy
|
Open
|
Total
|
|
Year 2021
|
Quarter 1
|
January
|
1
|
0
|
0
|
0
|
1
|
|
February
|
2
|
1
|
0
|
0
|
3
|
|
March
|
5
|
4
|
0
|
0
|
9
|
|
Quarter 2
|
April
|
5
|
0
|
0
|
0
|
5
|
|
May
|
8
|
0
|
0
|
0
|
8
|
|
June
|
0
|
0
|
0
|
0
|
0
|
|
Quarter 3
|
July
|
3
|
0
|
0
|
0
|
3
|
|
August
|
0
|
0
|
0
|
0
|
0
|
|
September
|
4
|
2
|
0
|
0
|
6
|
|
Quarter 4
|
October
|
1
|
0
|
0
|
0
|
1
|
|
November
|
2
|
2
|
0
|
0
|
4
|
|
December
|
1
|
0
|
0
|
0
|
1
|
|
Year 2022
|
Quarter 1
|
January
|
12
|
0
|
0
|
0
|
12
|
|
February
|
0
|
0
|
0
|
0
|
0
|
|
March
|
2
|
0
|
0
|
0
|
2
|
|
Quarter 2
|
April
|
4
|
0
|
0
|
0
|
4
|
|
May
|
8
|
0
|
0
|
0
|
8
|
|
June
|
3
|
0
|
0
|
0
|
3
|
|
Quarter 3
|
July
|
0
|
0
|
0
|
0
|
0
|
|
August
|
0
|
0
|
0
|
0
|
0
|
|
September
|
10
|
1
|
0
|
0
|
11
|
|
Quarter 4
|
October
|
2
|
0
|
0
|
0
|
2
|
|
November
|
4
|
0
|
0
|
0
|
4
|
|
December
|
1
|
0
|
0
|
0
|
1
|
|
Year 2023
|
Quarter 1
|
January
|
5
|
0
|
0
|
0
|
5
|
|
February
|
0
|
0
|
0
|
0
|
0
|
|
March
|
2
|
1
|
0
|
0
|
3
|
|
Quarter 2
|
April
|
2
|
0
|
0
|
0
|
2
|
|
May
|
11
|
2
|
0
|
0
|
13
|
|
June
|
0
|
0
|
0
|
0
|
0
|
|
Quarter 3
|
July
|
1
|
1
|
0
|
0
|
2
|
|
August
|
0
|
0
|
0
|
0
|
0
|
|
September
|
3
|
0
|
0
|
0
|
3
|
|
Quarter 4
|
October
|
5
|
0
|
0
|
0
|
5
|
|
November
|
2
|
0
|
0
|
0
|
2
|
|
December
|
1
|
0
|
0
|
0
|
1
|
|
Year 2024
|
Quarter 1
|
January
|
3
|
2
|
0
|
0
|
5
|
|
February
|
0
|
0
|
0
|
0
|
0
|
|
March
|
1
|
0
|
0
|
0
|
1
|
|
Quarter 2
|
April
|
0
|
0
|
0
|
0
|
0
|
|
May
|
0
|
0
|
0
|
0
|
0
|
|
Total
|
114
|
16
|
0
|
0
|
130
|
