49 lines
6.1 KiB
Plaintext
49 lines
6.1 KiB
Plaintext
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{"id":"8b2cb2cfa316759a","type":"text","text":"Прямое соединение","x":-466,"y":-100,"width":242,"height":50,"color":"1"},
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{"id":"2bdf4049001907df","type":"text","text":"Типы выполнения команд","x":-470,"y":-1,"width":250,"height":67},
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{"id":"2113f098128590fe","type":"text","text":"`ExecuteScalar()` для получения одного единственного значения","x":-840,"y":138,"width":370,"height":90},
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{"id":"108bbd9f02d8e401","type":"text","text":"Контейнер для SQL-запроса\n```c#\nstring sql = \"SELECT * FROM Cities\";\nSqlCommand command = new SqlCommand(sql, connection);\n```","x":-1190,"y":-174,"width":628,"height":148},
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{"id":"d9735150891c4158","type":"text","text":"Объект соединения\n```c#\nusing (SqlConnection connection = new SqlConnection(connectionString))\n{\n connection.Open(); // Открываем \"дверь\" в базу данных\n // ... работа с базой\n}\n```","x":-840,"y":-500,"width":880,"height":286},
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{"id":"947a21e1781317e7","type":"text","text":"`ExecuteNonQuery()` для действий, не возвращающих данные","x":-1019,"y":-1,"width":359,"height":94},
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{"id":"84b94932360eda9e","type":"text","text":"`ExecuteReader()` для получения набора строк","x":-505,"y":246,"width":320,"height":95},
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{"id":"27efef39b416ab4b","type":"text","text":"Работа с разными СУБД","x":-260,"y":112,"width":193,"height":88},
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{"id":"3a9bbf484ebf38fb","x":194,"y":246,"width":246,"height":90,"type":"text","text":"Цикл перебора строк `Read()`"},
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{"id":"ca3b8b3d970b43d5","type":"text","text":"`SqlDataReader` для чтения данных из базы «только вперед»","x":280,"y":413,"width":360,"height":94},
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{"id":"9071db8f34698d9f","type":"text","text":"Чтение и обработка данных","x":440,"y":114,"width":260,"height":96,"color":"1"},
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{"id":"03020e6a60bec40c","x":750,"y":-20,"width":269,"height":105,"type":"text","text":"Параметризация запросов `SqlParametr`"},
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{"id":"c2167400101c4b64","x":700,"y":236,"width":340,"height":304,"type":"text","text":"Защита от SQL–инъекций![[Pasted image 20260115150622.png]]"},
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{"id":"130bf55675a32819","x":750,"y":-357,"width":420,"height":300,"type":"text","text":"Разделение ответственности![[Pasted image 20260115150945.png]]"},
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{"id":"336331073c4d8e75","x":486,"y":-90,"width":169,"height":70,"color":"1","type":"text","text":"Архитектура"},
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{"id":"093cc0ffd7cef7b2","x":486,"y":-231,"width":169,"height":57,"type":"text","text":"Интерфейсы"},
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{"id":"2c984f54681597ef","type":"text","text":"Базы даных![[Pasted image 20260114112514.png]]","x":-163,"y":355,"width":396,"height":304,"color":"4"},
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{"id":"ca9e6a871a4f5486","x":94,"y":-472,"width":346,"height":298,"color":"1","type":"text","text":"# Dapper![[Pasted image 20260115151207.png]]"},
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{"id":"c450ef079f79ea28","type":"text","text":"# ADO.NET![[Pasted image 20260115150057.png]]","x":-20,"y":-90,"width":406,"height":259,"color":"1"},
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{"id":"9a0651e81ec8b5d7","x":511,"y":-436,"width":189,"height":79,"type":"text","text":"Автоматический маппинг"},
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{"id":"9ef9f1990df14ea4","x":450,"y":-560,"width":190,"height":60,"type":"text","text":"Асинхронность"},
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{"id":"52afea011c59b079","x":0,"y":-590,"width":248,"height":60,"type":"text","text":"Производительность"}
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