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Student Database Search System _ Beginner's Guide.html
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Student Database Search System _ Beginner's Guide.html
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</head>
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<body>
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<div class="presentation-container">
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<!-- Slide 1: Title -->
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<div class="slide active" id="slide1">
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<div class="title-slide">
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<div>
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<h1 class="thesis-title">Student Database Search System</h1>
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<p class="thesis-subtitle">From Excel to Database - A Beginner's Journey</p>
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</div>
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<div class="author-info" style="margin-top: 50px; padding-top: 30px; border-top: 2px solid #e0e6ed; width: 100%; max-width: 600px;">
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<p><strong>Goal:</strong> Build a working search system in 1 hour</p>
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<p><strong>Prerequisites:</strong> No database experience needed!</p>
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</div>
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</div>
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</div>
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<!-- Slide 2: What is a Relational Database? -->
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<div class="slide" id="slide2">
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<h1>What Is a Relational Database?</h1>
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<p class="lead">Beginner's Guide to Understanding Database Fundamentals</p>
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<div class="feature-box">
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<h3>You'll Learn:</h3>
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<div class="feature-item">
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<div class="feature-number">1</div>
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<div>What tables, fields, records, and keys are</div>
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</div>
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<div class="feature-item">
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<div class="feature-number">2</div>
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<div>How relationships connect data across tables</div>
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</div>
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<div class="feature-item">
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<div class="feature-number">3</div>
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<div>Why primary keys and foreign keys are critical</div>
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</div>
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<div class="feature-item">
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<div class="feature-number">4</div>
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<div>The role of SQL (Structured Query Language)</div>
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</div>
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<div class="feature-item">
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<div class="feature-number">5</div>
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<div>Real-world examples in banks, hospitals, and apps</div>
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</div>
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</div>
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<div class="database-concept">
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<span class="concept-title">Think of it like this:</span>
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<p>A relational database is like a digital filing cabinet with labeled folders (tables) that are connected to each other.</p>
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<p>Each folder contains specific information that can be linked to other folders.</p>
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</div>
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</div>
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<!-- Slide 3: Watch Learning Video -->
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<div class="slide" id="slide3">
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<h2>Let's Watch and Learn</h2>
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<p class="lead">Take 10 minutes to understand relational databases</p>
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<div class="video-container">
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<h3>What Is a Relational Database? | Beginner's Guide</h3>
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<p>By Knewget (30.3K subscribers)</p>
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<a href="https://www.youtube.com/watch?v=zDNAOM6Mx4E" target="_blank" class="video-link">
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▶ Watch Video on YouTube
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</a>
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<p style="margin-top: 20px; color: #666;">
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This video explains everything you need to know about databases in plain English.
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Perfect for beginners!
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</p>
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</div>
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<div class="feature-box">
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<h3>Key Takeaways:</h3>
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<div class="feature-item">
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<div class="feature-number">✓</div>
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<div><strong>Tables</strong> = Excel sheets with rows and columns</div>
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</div>
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<div class="feature-item">
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<div class="feature-number">✓</div>
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<div><strong>Rows</strong> = Individual records (like a student)</div>
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</div>
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<div class="feature-item">
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<div class="feature-number">✓</div>
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<div><strong>Columns</strong> = Fields of information (name, grade, etc.)</div>
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</div>
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<div class="feature-item">
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<div class="feature-number">✓</div>
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<div><strong>Primary Key</strong> = Unique ID for each row</div>
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</div>
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<div class="feature-item">
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<div class="feature-number">✓</div>
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<div><strong>Foreign Key</strong> = Link to another table</div>
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</div>
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</div>
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</div>
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<!-- Slide 4: Our Project - What We're Building -->
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<div class="slide" id="slide4">
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<h2>Our 1-Hour MVP Project</h2>
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<p class="lead">Simple Python program to search student schedules</p>
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<div class="database-concept">
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<span class="concept-title">Current Problem:</span>
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<p>School data is in messy Excel sheets that are hard to search.</p>
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<p>We need to find information quickly!</p>
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</div>
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<h3>Search Examples We'll Build:</h3>
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<div class="feature-box">
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<div class="feature-item">
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<div class="feature-number">1</div>
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<div>
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<strong>Find homeroom teacher:</strong><br>
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"Who is the homeroom teacher for student Alex?"
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</div>
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</div>
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<div class="feature-item">
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<div class="feature-number">2</div>
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<div>
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<strong>Find students in a subject:</strong><br>
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"Show me all students in Math class 4A"
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</div>
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</div>
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<div class="feature-item">
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<div class="feature-number">3</div>
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<div>
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<strong>Simple database search:</strong><br>
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"Search for any information across all sheets"
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</div>
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</div>
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</div>
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</div>
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||||
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||||
<!-- Slide 5: Step 1 - Setup -->
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||||
<div class="slide" id="slide5">
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<h2>Step 1: Setup (5 minutes)</h2>
|
||||
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||||
<div class="code-block"><span class="code-comment"># 1. Create a new file called "school_search.py"</span>
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||||
<span class="code-comment"># 2. Open it in any text editor</span>
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||||
<span class="code-comment"># 3. Start with this basic setup:</span>
|
||||
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||||
<span class="code-keyword">import</span> pandas <span class="code-keyword">as</span> pd
|
||||
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||||
<span class="code-keyword">def</span> <span class="code-function">main</span>():
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<span class="code-comment"># Main function - everything starts here</span>
|
||||
print(<span class="code-string">"=== School Search System ==="</span>)
|
||||
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||||
<span class="code-comment"># Load our Excel file</span>
|
||||
file_path = <span class="code-string">"school_data.xlsx"</span>
|
||||
|
||||
<span class="code-keyword">try</span>:
|
||||
<span class="code-comment"># Read the Excel file</span>
|
||||
excel_file = pd.ExcelFile(file_path)
|
||||
print(<span class="code-string">f"Success! Found </span>{len(excel_file.sheet_names)}<span class="code-string"> sheets"</span>)
|
||||
<span class="code-keyword">return</span> excel_file
|
||||
<span class="code-keyword">except</span> Exception <span class="code-keyword">as</span> e:
|
||||
print(<span class="code-string">f"Error: </span>{e}<span class="code-string">"</span>)
|
||||
<span class="code-keyword">return</span> <span class="code-keyword">None</span>
|
||||
|
||||
<span class="code-keyword">if</span> __name__ == <span class="code-string">"__main__"</span>:
|
||||
main()</div>
|
||||
|
||||
<div class="feature-box">
|
||||
<h3>To Install Required Libraries:</h3>
|
||||
<div class="code-block" style="margin: 10px 0; padding: 15px; background: #2c3e50;"><span class="code-comment"># Open Command Prompt or Terminal and type:</span>
|
||||
pip install pandas</div>
|
||||
<p>That's it! Pandas will help us read Excel files easily.</p>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<!-- Slide 6: Step 2 - Simple Search Function -->
|
||||
<div class="slide" id="slide6">
|
||||
<h2>Step 2: Create Search Function (15 minutes)</h2>
|
||||
|
||||
<div class="code-block"><span class="code-comment"># Add this function to your file (under the imports)</span>
|
||||
|
||||
<span class="code-keyword">def</span> <span class="code-function">simple_search</span>(excel_file, search_term):
|
||||
<span class="code-comment">"""Search for any term across all sheets"""</span>
|
||||
results = []
|
||||
|
||||
<span class="code-keyword">for</span> sheet_name <span class="code-keyword">in</span> excel_file.sheet_names:
|
||||
<span class="code-comment"># Read each sheet</span>
|
||||
df = pd.read_excel(excel_file, sheet_name=sheet_name)
|
||||
|
||||
<span class="code-comment"># Search in all cells</span>
|
||||
<span class="code-keyword">for</span> row_idx, row <span class="code-keyword">in</span> df.iterrows():
|
||||
<span class="code-keyword">for</span> col_name, cell_value <span class="code-keyword">in</span> row.items():
|
||||
<span class="code-keyword">if</span> pd.notna(cell_value):
|
||||
<span class="code-keyword">if</span> search_term.lower() <span class="code-keyword">in</span> str(cell_value).lower():
|
||||
results.append({
|
||||
<span class="code-string">'sheet'</span>: sheet_name,
|
||||
<span class="code-string">'row'</span>: row_idx + 2, <span class="code-comment"># Excel row number</span>
|
||||
<span class="code-string">'column'</span>: col_name,
|
||||
<span class="code-string">'value'</span>: str(cell_value)
|
||||
})
|
||||
|
||||
<span class="code-keyword">return</span> results</div>
|
||||
|
||||
<h3>Update Your Main Function:</h3>
|
||||
<div class="code-block"><span class="code-keyword">def</span> <span class="code-function">main</span>():
|
||||
print(<span class="code-string">"=== School Search System ==="</span>)
|
||||
|
||||
<span class="code-comment"># Load data</span>
|
||||
data = pd.ExcelFile(<span class="code-string">"school_data.xlsx"</span>)
|
||||
|
||||
<span class="code-comment"># Test search</span>
|
||||
print(<span class="code-string">"\nSearching for 'Math'..."</span>)
|
||||
math_results = simple_search(data, <span class="code-string">"Math"</span>)
|
||||
|
||||
<span class="code-keyword">for</span> result <span class="code-keyword">in</span> math_results[:5]: <span class="code-comment"># Show first 5 results</span>
|
||||
print(<span class="code-string">f"Found in </span>{result['sheet']}<span class="code-string">, row </span>{result['row']}<span class="code-string">: </span>{result['value']}<span class="code-string">"</span>)
|
||||
|
||||
print(<span class="code-string">f"\nTotal found: </span>{len(math_results)}<span class="code-string"> results"</span>)</div>
|
||||
</div>
|
||||
|
||||
<!-- Slide 7: Step 3 - Specific Searches -->
|
||||
<div class="slide" id="slide7">
|
||||
<h2>Step 3: Add Specific Searches (15 minutes)</h2>
|
||||
|
||||
<div class="code-block"><span class="code-comment"># Function to find homeroom teacher</span>
|
||||
<span class="code-keyword">def</span> <span class="code-function">find_teacher</span>(excel_file, student_name):
|
||||
<span class="code-comment">"""Find homeroom teacher for a student"""</span>
|
||||
|
||||
<span class="code-keyword">for</span> sheet_name <span class="code-keyword">in</span> excel_file.sheet_names:
|
||||
df = pd.read_excel(excel_file, sheet_name=sheet_name)
|
||||
|
||||
<span class="code-comment"># Look for student name</span>
|
||||
<span class="code-keyword">for</span> idx, row <span class="code-keyword">in</span> df.iterrows():
|
||||
<span class="code-keyword">for</span> cell_value <span class="code-keyword">in</span> row.values:
|
||||
<span class="code-keyword">if</span> pd.notna(cell_value) <span class="code-keyword">and</span> student_name <span class="code-keyword">in</span> str(cell_value):
|
||||
<span class="code-comment"># Check if teacher info is in same row</span>
|
||||
<span class="code-keyword">for</span> col <span class="code-keyword">in</span> df.columns:
|
||||
<span class="code-keyword">if</span> <span class="code-string">"teacher"</span> <span class="code-keyword">in</span> str(col).lower() <span class="code-keyword">or</span> <span class="code-string">"преподаватель"</span> <span class="code-keyword">in</span> str(col).lower():
|
||||
<span class="code-keyword">if</span> pd.notna(row[col]):
|
||||
<span class="code-keyword">return</span> row[col]
|
||||
|
||||
<span class="code-keyword">return</span> <span class="code-string">"Teacher not found"</span></div>
|
||||
|
||||
<div class="code-block"><span class="code-comment"># Function to find students by class</span>
|
||||
<span class="code-keyword">def</span> <span class="code-function">find_students_in_class</span>(excel_file, class_name):
|
||||
<span class="code-comment">"""Find all students in a specific class (like 4A)"""</span>
|
||||
students = []
|
||||
|
||||
<span class="code-keyword">for</span> sheet_name <span class="code-keyword">in</span> excel_file.sheet_names:
|
||||
df = pd.read_excel(excel_file, sheet_name=sheet_name)
|
||||
|
||||
<span class="code-keyword">for</span> idx, row <span class="code-keyword">in</span> df.iterrows():
|
||||
<span class="code-keyword">for</span> cell_value <span class="code-keyword">in</span> row.values:
|
||||
<span class="code-keyword">if</span> pd.notna(cell_value) <span class="code-keyword">and</span> class_name <span class="code-keyword">in</span> str(cell_value):
|
||||
<span class="code-comment"># Look for student names in this row</span>
|
||||
<span class="code-keyword">for</span> col <span class="code-keyword">in</span> df.columns:
|
||||
<span class="code-keyword">if</span> <span class="code-string">"name"</span> <span class="code-keyword">in</span> str(col).lower() <span class="code-keyword">or</span> <span class="code-string">"фио"</span> <span class="code-keyword">in</span> str(col).lower():
|
||||
<span class="code-keyword">if</span> pd.notna(row[col]):
|
||||
students.append(row[col])
|
||||
|
||||
<span class="code-keyword">return</span> list(set(students)) <span class="code-comment"># Remove duplicates</span></div>
|
||||
</div>
|
||||
|
||||
<!-- Slide 8: Step 4 - Complete Program -->
|
||||
<div class="slide" id="slide8">
|
||||
<h2>Step 4: Complete Program (10 minutes)</h2>
|
||||
|
||||
<div class="code-block"><span class="code-comment"># school_search.py - COMPLETE PROGRAM</span>
|
||||
|
||||
<span class="code-keyword">import</span> pandas <span class="code-keyword">as</span> pd
|
||||
|
||||
<span class="code-comment"># [PASTE ALL FUNCTIONS FROM PREVIOUS SLIDES HERE]</span>
|
||||
<span class="code-comment"># 1. simple_search() function</span>
|
||||
<span class="code-comment"># 2. find_teacher() function</span>
|
||||
<span class="code-comment"># 3. find_students_in_class() function</span>
|
||||
|
||||
<span class="code-keyword">def</span> <span class="code-function">main</span>():
|
||||
<span class="code-comment"># 1. Load the data</span>
|
||||
print(<span class="code-string">"=== Student Database Search ==="</span>)
|
||||
|
||||
<span class="code-keyword">try</span>:
|
||||
<span class="code-comment"># Change this to your actual file name</span>
|
||||
data = pd.ExcelFile(<span class="code-string">"Распределение по группам Технолицей 2025_2026 - 4.xlsx"</span>)
|
||||
print(<span class="code-string">f"✓ Loaded: </span>{len(data.sheet_names)}<span class="code-string"> sheets"</span>)
|
||||
<span class="code-keyword">except</span>:
|
||||
print(<span class="code-string">"✗ Error: Make sure the Excel file is in the same folder!"</span>)
|
||||
<span class="code-keyword">return</span>
|
||||
|
||||
<span class="code-comment"># 2. Example searches</span>
|
||||
print(<span class="code-string">"\n--- Example 1: Find Teacher ---"</span>)
|
||||
teacher = find_teacher(data, <span class="code-string">"Арефьев"</span>)
|
||||
print(<span class="code-string">f"Homeroom teacher: </span>{teacher}<span class="code-string">"</span>)
|
||||
|
||||
print(<span class="code-string">"\n--- Example 2: Find Students ---"</span>)
|
||||
students = find_students_in_class(data, <span class="code-string">"4A"</span>)
|
||||
print(<span class="code-string">f"Students in 4A: </span>{len(students)}<span class="code-string"> found"</span>)
|
||||
<span class="code-keyword">for</span> student <span class="code-keyword">in</span> students[:3]: <span class="code-comment"># Show first 3</span>
|
||||
print(<span class="code-string">f" • </span>{student}<span class="code-string">"</span>)
|
||||
|
||||
print(<span class="code-string">"\n--- Example 3: General Search ---"</span>)
|
||||
results = simple_search(data, <span class="code-string">"Math"</span>)
|
||||
print(<span class="code-string">f"Found 'Math' </span>{len(results)}<span class="code-string"> times"</span>)
|
||||
|
||||
print(<span class="code-string">"\n=== Search Complete ==="</span>)
|
||||
|
||||
<span class="code-keyword">if</span> __name__ == <span class="code-string">"__main__"</span>:
|
||||
main()</div>
|
||||
|
||||
<div class="feature-box">
|
||||
<h3>How to Run:</h3>
|
||||
<div class="feature-item">
|
||||
<div class="feature-number">1</div>
|
||||
<div>Save all code in "school_search.py"</div>
|
||||
</div>
|
||||
|
||||
<div class="feature-item">
|
||||
<div class="feature-number">2</div>
|
||||
<div>Put your Excel file in same folder</div>
|
||||
</div>
|
||||
|
||||
<div class="feature-item">
|
||||
<div class="feature-number">3</div>
|
||||
<div>Open terminal in that folder</div>
|
||||
</div>
|
||||
|
||||
<div class="feature-item">
|
||||
<div class="feature-number">4</div>
|
||||
<div>Type: <code>python school_search.py</code></div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<!-- Slide 9: Next Steps & Database Connection -->
|
||||
<div class="slide" id="slide9">
|
||||
<h2>Next Step: Real Database</h2>
|
||||
<p class="lead">Moving from Excel to SQLite database</p>
|
||||
|
||||
<div class="code-block"><span class="code-comment"># Simple SQLite database setup (future enhancement)</span>
|
||||
<span class="code-keyword">import</span> sqlite3
|
||||
|
||||
<span class="code-keyword">def</span> <span class="code-function">create_database</span>():
|
||||
<span class="code-comment"># Connect to database (creates if doesn't exist)</span>
|
||||
conn = sqlite3.connect(<span class="code-string">'school.db'</span>)
|
||||
cursor = conn.cursor()
|
||||
|
||||
<span class="code-comment"># Create tables (like in the video!)</span>
|
||||
cursor.execute(<span class="code-string">'''CREATE TABLE IF NOT EXISTS students (
|
||||
id INTEGER PRIMARY KEY,
|
||||
name TEXT NOT NULL,
|
||||
grade TEXT,
|
||||
class TEXT,
|
||||
homeroom_teacher_id INTEGER
|
||||
)'''</span>)
|
||||
|
||||
cursor.execute(<span class="code-string">'''CREATE TABLE IF NOT EXISTS teachers (
|
||||
id INTEGER PRIMARY KEY,
|
||||
name TEXT NOT NULL,
|
||||
subject TEXT
|
||||
)'''</span>)
|
||||
|
||||
conn.commit()
|
||||
conn.close()
|
||||
print(<span class="code-string">"Database created successfully!"</span>)</div>
|
||||
|
||||
<div class="database-concept">
|
||||
<span class="concept-title">Database vs Excel:</span>
|
||||
<p><strong>Excel:</strong> Good for viewing, bad for searching</p>
|
||||
<p><strong>Database:</strong> Fast searching, relationships, scalable</p>
|
||||
</div>
|
||||
|
||||
<div class="feature-box">
|
||||
<h3>Your 1-Hour MVP is Complete!</h3>
|
||||
<p>You've built a working search system that can:</p>
|
||||
<p>• Search across all Excel sheets</p>
|
||||
<p>• Find teachers for students</p>
|
||||
<p>• List students in classes</p>
|
||||
<p>• Be extended to a real database</p>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<!-- Navigation -->
|
||||
<div class="navigation">
|
||||
<button class="nav-btn" id="prev-btn" onclick="prevSlide()" disabled="">← Back</button>
|
||||
|
||||
<div class="slide-counter">
|
||||
<span id="current-slide">1</span> of <span id="total-slides">9</span>
|
||||
</div>
|
||||
|
||||
<button class="nav-btn" id="next-btn" onclick="nextSlide()">Next →</button>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<script>
|
||||
let currentSlide = 1;
|
||||
const totalSlides = 9;
|
||||
|
||||
function showSlide(slideNumber) {
|
||||
document.querySelectorAll('.slide').forEach(slide => {
|
||||
slide.classList.remove('active');
|
||||
});
|
||||
|
||||
document.getElementById(`slide${slideNumber}`).classList.add('active');
|
||||
document.getElementById(`slide${slideNumber}`).scrollTop = 0;
|
||||
|
||||
document.getElementById('current-slide').textContent = slideNumber;
|
||||
|
||||
document.getElementById('prev-btn').disabled = slideNumber === 1;
|
||||
document.getElementById('next-btn').disabled = slideNumber === totalSlides;
|
||||
|
||||
if (slideNumber === totalSlides) {
|
||||
document.getElementById('next-btn').textContent = 'Finish';
|
||||
} else {
|
||||
document.getElementById('next-btn').textContent = 'Next →';
|
||||
}
|
||||
}
|
||||
|
||||
function nextSlide() {
|
||||
if (currentSlide < totalSlides) {
|
||||
currentSlide++;
|
||||
showSlide(currentSlide);
|
||||
}
|
||||
}
|
||||
|
||||
function prevSlide() {
|
||||
if (currentSlide > 1) {
|
||||
currentSlide--;
|
||||
showSlide(currentSlide);
|
||||
}
|
||||
}
|
||||
|
||||
// Initialize
|
||||
showSlide(1);
|
||||
|
||||
// Keyboard navigation
|
||||
document.addEventListener('keydown', (e) => {
|
||||
if (e.key === 'ArrowRight' || e.key === ' ' || e.key === 'Enter') {
|
||||
nextSlide();
|
||||
} else if (e.key === 'ArrowLeft') {
|
||||
prevSlide();
|
||||
}
|
||||
});
|
||||
|
||||
// Touch swipe for mobile
|
||||
let touchStartY = 0;
|
||||
let touchEndY = 0;
|
||||
|
||||
document.addEventListener('touchstart', (e) => {
|
||||
touchStartY = e.changedTouches[0].screenY;
|
||||
});
|
||||
|
||||
document.addEventListener('touchend', (e) => {
|
||||
touchEndY = e.changedTouches[0].screenY;
|
||||
const swipeThreshold = 100;
|
||||
|
||||
if (touchEndY < touchStartY - swipeThreshold) {
|
||||
nextSlide();
|
||||
}
|
||||
|
||||
if (touchEndY > touchStartY + swipeThreshold) {
|
||||
prevSlide();
|
||||
}
|
||||
});
|
||||
</script>
|
||||
|
||||
</body></html>
|
||||
Reference in New Issue
Block a user