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Pranav Bakare @mrcaption49

Oracle Full Stack Developer

AWS Services For Developers In 60 Characters

Here's the summary of the blog post in 250 characters: "Must-know AWS services for developers: EC2, Lambda, S3, RDS, DynamoDB, VPC, Route 53, IAM, CloudWatch. Master serverless architecture with API Gateway, Lambda, and Cognito.

Oracle Restore Points: Simplify DB Rollbacks With Flashback Database

Restore Points in Oracle SQL: Named markers for rolling back database changes without full restores. Types include Normal & Guaranteed Restore Points, used with Flashback Database for quick recovery.

Liquibase: Database Schema Change Management Tool

Liquibase: a tool for tracking & managing database schema changes. It uses changelogs & changesets to apply updates in a structured way, preventing duplicate changes & ensuring consistency across envs.

Locking Rows With SELECT ... FOR UPDATE In SQL

Lock rows in a table with SELECT ... FOR UPDATE, ensuring data consistency. Syntax: SELECT * FROM table_name WHERE condition FOR UPDATE; Example: Lock row where account_id = 1, then update balance.

Step-by-Step Guide To Creating And Merging Feature Branches In Git

Create & merge feature branches in Git: Switch to master, pull latest changes. Create new branch with `git checkout -b`, make changes, stage & commit. Push to remote, create Pull Request, merge into master, delete branch.

GitLab Repository Management: A Step-by-Step Guide

Git workflow in 10 steps: clone, pull, create branch, make changes, stage & commit, push to remote, submit Merge Request, merge into main branch, delete feature branch. Follow this guide for a smooth GitLab experience!

Isolating Changes With Feature Branching: A Workflow Example

Feature branch isolates changes for a single feature or task, ensuring main codebase remains stable & unaffected by incomplete changes. Merged back into main branch via merge request after completion.

DTO Vs DAO: Design Patterns For Java Apps

DTO is a simple object transferring data between layers or processes, containing fields to store data & no business logic. DAO interacts with the database, abstracting persistence logic & providing reusable methods for CRUD operations.

Getting Started With GitLab: Key Terminologies & Practical Examples

Get started with ! Understand key terms: Repository, Branch, Merge Request, Pipeline & more. Practice with simple examples to simplify collaboration & automation in development workflows.

Oracle SQL Unique Constraint Allows Multiple NULL Values

Oracle SQL allows multiple NULL values in a UNIQUE key column as NULLs are treated as distinct. Non-NULL values must be unique among all other non-NULL values.

Oracle Global Temporary Table (GTT) Tutorial And Examples

Temporary tables in Oracle SQL allow storing data for session or transaction duration, persisting structure but not data. Data is accessible only to inserting session and can be deleted at commit or preserved until session ends.

Recursive CTE For Hierarchical Data Structures Explained

Recursive CTEs allow hierarchical data retrieval. They consist of an anchor member & a recursive member. Example: Find employee hierarchy using `WITH RECURSIVE EmployeeHierarchy AS (...) SELECT * FROM EmployeeHierarchy;

Handling SQL Errors With SQLCODE And SQLERRM In PL/SQL

Combine SQLCODE & SQLERRM in EXCEPTION blocks for detailed Oracle error handling: Error Code: -1476, Error Message: ORA-01476: divisor is equal to zero.

Understanding CASE And DECODE In SQL: Conditional Logic Made Easy

Learn CASE & DECODE in SQL: Conditional logic made easy! Use CASE for complex conditions & portability, DECODE for simpler equality checks in Oracle SQL.

ACID Properties Ensure Database Transaction Reliability

ACID properties ensure reliable transactions: Atomicity (all or nothing), Consistency (valid state transitions), Isolation (independent transactions), Durability (permanent changes).

Oracle Query Hints Improve Performance And Optimizer Decisions

Query hints improve query performance by giving Oracle optimizer explicit execution instructions. Developers can override defaults with hints for better query behavior.

Oracle DBMS_Scheduler: Automate Jobs With Ease

Oracle DBMS_Scheduler explained: Automate Oracle database tasks with programs, schedules & jobs for efficient resource usage & reduced manual intervention.

Understanding SAVEPOINTS In PL/SQL: Partial Rollback Explained

SAVEPOINT in PL/SQL: Marks a checkpoint in a transaction for partial rollback, not partial commit. Use ROLLBACK TO SAVEPOINT to undo changes made after a specific point.

SQL Constraints In USER_CONSTRAINTS Table Explained

The USER_CONSTRAINTS table in SQL databases provides info about constraints on user tables, including primary keys, foreign keys & more. Use SELECT * FROM USER_CONSTRAINTS WHERE TABLE_NAME = 'EMPLOYEES'; to view constraints.

SQL*Loader: Bulk Loading Data Into Oracle Tables With Ease

SQL*Loader loads data from external files into Oracle tables using a control file that maps data structure and format. It generates bad, discard, and log files for error handling and monitoring.

Non-Clustered Index: Efficiently Sorting And Accessing Employee Data

Non-Clustered Index stores emp_name values in sorted order with pointers to corresponding rows. Efficiently accesses data when searching by name without scanning entire table.

Clustered Vs Non-Clustered Indexes: A Clear Explanation

Clustered Index sorts data by emp_id, Non-Clustered Index by emp_name. Clustered Index determines physical storage, Non-Clustered Index improves query performance with pointers to rows.

Dynamic SQL In Oracle: Best Practices For Security And Performance

Dynamic SQL in Oracle explained: learn about common terms, concepts & best practices for executing SQL queries at runtime with flexibility & security.

Static Site Generation: Pre-Printing Websites Like Books

Static Site Generation (SSG) pre-builds websites at build time, generating static HTML files that load instantly, like pre-printed books on a shelf. This approach offers speed, efficiency, and scalability, making it ideal for serving content quickly.

Debouncing Vs Throttling: Timing Is Everything In Software Engineering

Debouncing: wait until action stops before executing (e.g. search bar). Throttling: execute at consistent intervals (e.g. log scroll position every second). Key ideas for efficient event handling in software engineering.

React Lazy Loading And Memoization Explained With Moving House Analogy

Move only needed furniture like React.lazy loads components on demand. Save calculated results like useMemo caches expensive computations.

Advanced Oracle SQL Features And Techniques

Advanced PL/SQL features for improved performance and scalability including materialized views, collection methods, interval partitioning, bulk DML operations, job scheduling with DBMS_SCHEDULER, and flashback technology.

PARALLEL Vs Serial Execution In SQL Queries

When using PARALLEL 4 as degree of parallelism, queries execute with 4 separate resources simultaneously, improving performance for large or complex queries. Without hint, queries use a single resource in serial execution.

Oracle Hints For Improved Query Performance

Oracle Hints Pattern: Improve query performance by guiding database optimizer with INDEX, FULL, LEADING, PARALLEL, USE_NL, NO_MERGE, ALL_ROWS, NO_INDEX, MATERIALIZE & STAR hints.

Querying Profiler Data For Performance Optimization

Analyze profiling data with 5 steps: PROFILER_RUNS, PROFILER_LINES, PROFILER_DATA, PROFILER_ERRORS & identify high-cost operations for optimization.

Profiling PL/SQL With DBMS_PROFILER Step By Step

START Profiling begins tracking execution metrics, EXECUTE PL/SQL Block generates profiling data, STOP Profiling ends session & stores data in PROFILER_RUNS, PROFILER_LINES, PROFILER_DATA, & PROFILER_ERRORS tables.

SQL*Loader In Oracle SQL: Efficient Data Loading For Large Volumes

SQL*Loader loads bulk data from external files into Oracle databases efficiently & securely. It's used for data import, migration, ETL processes, initial population & synchronization.

Oracle USER_CONS_COLUMNS Table: Constraint Column Details

Oracle's USER_CONS_COLUMNS table stores info about columns involved in constraints (primary keys, foreign keys, unique constraints) & their positions in the constraint.

Unlocking Business Insights With OLAP Technology

OLAP enables analysts to extract & query data interactively from multidimensional data warehouses for decision-making in BI applications. It uses a multidimensional data model, offering powerful operations like slice, dice, drill-down, and pivot.

Removing Duplicate Records From A Table Using Various Methods

Removing duplicates from emp table using SQL: unique identifier, self join, window functions & MIN function methods demonstrated.

Differences Between GROUP BY And PARTITION BY In SQL Explained

GROUP BY reduces rows, PARTITION BY keeps all rows & adds calculated values. GROUP BY aggregates, PARTITION BY calculates over subsets.

Optimize SQL Queries With EXPLAIN PLAN & DBMS_PROFILER

EXPLAIN PLAN shows Oracle's execution plan before running SQL queries to optimize them. DBMS_PROFILER profiles & improves PL/SQL code performance after execution.

Docker Vs Docker Compose: What's The Difference?

Docker creates & manages individual containers, while Docker Compose orchestrates multi-container apps with ease, defining dependencies & configs for complex services.

Data Manipulation With SQL Procedures

Procedures streamline data updates & ensure consistency across apps by abstracting SQL operations into reusable units. They also enable robust logging & error handling, crucial for maintaining app reliability & ease of troubleshooting.

Common Oracle PL/SQL Interview Questions For Advanced Developers

Common interview questions for Oracle PL/SQL Developers include procedures/functions, cursors, triggers, dynamic SQL, performance tuning & security.

Normal Vs Ref Cursors In PL/SQL: Static Vs Dynamic Queries

Normal cursors have static queries, predefined at compile-time. Ref cursors are dynamic, allowing for changing queries during runtime.

Top 10 Query Optimization Techniques For Telecom Applications

Partition large tables by date or region, add indexes on frequently queried columns, and use materialized views for precomputed aggregations to optimize telecom app queries.

PL/SQL Collections: A Comprehensive Guide To Terminologies And Usage

Learn about PL/SQL collections: Associative Arrays, Nested Tables & Varrays. Understand key concepts, terminologies & usage examples to improve your Oracle database development skills.

Oracle SQL BULK COLLECT Optimization Techniques

BULK COLLECT in Oracle SQL fetches multiple rows into a PL/SQL collection efficiently, reducing context switches & improving performance for large result sets.

Improving Performance And Security With Bind Variables In PL/SQL

Bind variables improve performance & security in PL/SQL by reusing execution plans & separating code from data, reducing parsing time & SQL injection risks.

PL/SQL Developer Expertise: Advanced Topics For Interviews

PL/SQL Developers: Master advanced topics like dynamic SQL, cursors, composite data types, error handling, bulk processing & more to write efficient, scalable code.

Dynamic SQL With Bind Variables For Secure User Input

Dynamic SQL in PL/SQL uses bind variables for values & string concat for dynamic column names. Real-life example: filtering employees by user-inputted column & value, preventing SQL injection with bind variables.

Serverless Computing With AWS Lambda: Efficient Code Execution

AWS Lambda: run code without servers, upload & trigger execution. No server mgmt, auto scaling, cost-efficient & seamless integration with AWS services. Like having a team that works only when needed!

AWS Core Services For Cloud Computing Foundation

Focus on core AWS services: EC2, S3, IAM, VPC, Lambda & ELB for a solid foundation in cloud computing. Mastering these will give you a strong understanding of AWS.

Advanced SQL Concepts For Software Engineers

Mastering advanced SQL concepts: clustered & non-clustered indexes, optimizing slow queries, window functions, data partitioning, transactions, CTEs, normalization, triggers, indexing strategies & more.

Advanced SQL Interview Questions For Experienced Candidates

Advanced SQL interview questions covering performance tuning, aggregate functions, partitioning, CTEs, triggers, ACID properties & more.

PL/SQL Interview Questions For 3 Years Of Experience

PL/SQL interview questions for 3 years of experience focus on complex data processing, error handling, dynamic SQL, and efficient data management techniques.

Oracle SQL Function Parameters: IN, OUT, And IN/OUT Explained

Oracle SQL function parameters can be categorized as IN, OUT or IN/OUT. IN params are read-only, OUT return values, while IN/OUT can modify input values & return them to the caller.

Bulk Collect Methods For Efficient Data Retrieval

Bulk Collect can be used with SELECT INTO & FETCH statements in PL/SQL for efficient bulk fetching of data into collections. Suitable for small or large datasets.

Understanding Clustered And Non-Clustered Indexes In Simple Terms

Clustered indexes organize data physically in a table based on a specific attribute, like ISBN. Non-clustered indexes provide an additional way to find data using a separate index, like a card catalog.

PLSQL Functions Vs Procedures: Key Differences Explained

Functions compute & return a single value, while procedures perform tasks & may not return a value. Functions are used for calculations, procedures for complex logic or batch processing.

Procedural Programming In PL/SQL: A Comprehensive Guide

Procedures in PL/SQL: Learn about standalone, stored, package, parameterized, overloaded, recursive & dynamic procedures with examples for Oracle SQL & PL/SQL development.

PRAGMA EXCEPTION_INIT: Customizing Oracle Error Handling In PL/SQL

PRAGMA EXCEPTION_INIT links user-defined exceptions to Oracle error codes, enhancing readability & specificity in error handling for clearer code maintenance.

Cursors In PLSQL Explained With Examples

A cursor in PLSQL retrieves query results row by row, allowing controlled handling of individual rows. Learn about implicit & explicit cursors, types, and examples.

Database Normalization: First Normal Form (1NF) Basics

Table in 1NF has atomic values & no repeating groups. Each cell holds a single value, not lists. Ensures data consistency & easier management.

Finding Second Highest Salary With Oracle SQL Methods

6 ways to find the 2nd highest salary in Oracle SQL: Subquery, ORDER BY with ROWNUM, RANK() & DENSE_RANK(), GROUP BY with HAVING, Common Table Expression (CTE) and more!

Understanding The Request-Response Cycle In MERN Stack Applications

Request-response cycle in MERN stack: React sends HTTP req to Express, which queries MongoDB & returns JSON response, updating UI with product details.

Debouncing Vs Throttling: Delaying And Limiting Function Execution

Debouncing delays func execution until user stops performing action. Throttling limits func executions to once per specified interval, preventing excessive triggering.

Oracle 19c Automatic Indexing Boosts Database Efficiency

Machine learning powers Oracle 19c's Automatic Indexing, creating & optimizing indexes based on workload patterns. It observes frequent queries, makes suggestions for new indexes, & adjusts over time to keep databases efficient.

How To Apply Public Read Access To Amazon S3 Bucket Policy

Applied bucket policy to django-blog49 S3 bucket, allowing public read access to objects via "s3:GetObject" action and "*": resource.

Dynamic SQL Execution With Bulk Collect In Oracle SQL

Dynamically execute SQL stmts & fetch multiple rows using EXECUTE IMMEDIATE & BULK COLLECT in Oracle SQL, enhancing efficiency & security.

Kubernetes Manifest Files: Deploying Apps With YAML Configs

Manifest files in Kubernetes define resources like Deployments, Services, ConfigMaps & PersistentVolumes to deploy & manage apps. They tell Kubernetes what to create, how to run it & how to manage it.

Docker And Kubernetes: Container Orchestration Made Easy

Docker & Kubernetes workflow together: Build Docker images, push to registry, deploy with Kubernetes manifests, run pods, scale & update apps, expose services. A powerful ecosystem for cloud-native app development!

Docker And Kubernetes: A Local Development Setup With Minikube

Docker & Kubernetes work together seamlessly! Install Docker Desktop for containers & Minikube for local Kubernetes cluster, perfect for dev & testing purposes.

Middleware As Restaurant Kitchen: Processing Requests And Responses

Middleware acts like a restaurant kitchen: Order Taker (auth & input validation), Prep Cook (data processing), Chef (request processing), Waitstaff (response modifications). Modular, flexible, and efficient!

Unit Testing With Python's Unittest Framework: A Beginner's Guide

Learn how to write unit tests with Python's unittest framework! Create test cases, use assertions like assertEqual & assertTrue, and run tests with unittest.main(). Simple example included!

Django On Render With Seamless S3 Storage For Media Files

Deploy Django app on Render with seamless S3 storage: Configure AWS credentials, update settings.py & render.yaml, set up IAM user & S3 bucket, push code to GitHub & deploy to Render.

Django Key Terminologies Explained

Django key terms: Models define db structure, Views handle requests & responses, Templates render dynamic content, URL Dispatcher maps URLs to views, ORM interacts with db using Python code.

Bottle Micro Web Framework For Python Development

Bottle is a lightweight Python framework for building small web apps, APIs & prototypes with single file deployment, built-in server & WSGI compliance.

Nested Tables In PL/SQL: A Comprehensive Guide

Learn how to create and use nested tables in PL/SQL with this comprehensive guide. Discover how to define types, declare variables, and manipulate nested tables for efficient data management.

PL/SQL Data Structures: Records And Collections Explained

PL/SQL basics: RECORD holds 1 row with multiple fields, while COLLECTION stores multiple rows/values for bulk data handling and batch processing.

Managing VARRAY Size In PL/SQL: Count, Limit, And Extending

VARRAY in PL/SQL has fixed max size, no EXTEND or LIMIT functions but uses COUNT & LIMIT props for management. Use COUNT for current elements & LIMIT for max size defined at declaration.

Materialized Views In Oracle SQL: Performance Optimization Techniques

Materialized Views in Oracle SQL improve query performance by storing precomputed results physically on disk, ideal for complex queries & data warehousing scenarios.

Recursive CTE Example With Sample Data For Employee Hierarchy

Recursive CTE used to retrieve employee hierarchy, starting from top-level manager Alice. Sample table created with employees data, then recursive query written to display hierarchy levels.

Calculating Salaries Greater Than Average In Oracle SQL Using CTEs

Calculate salaries > avg salary using Oracle SQL. Create employees table, insert sample data & use CTEs with subqueries or window functions to find employees with higher salaries.

Improving SQL Query Readability With Common Table Expressions (CTE)

CTE's improve readability & organization of complex queries by breaking them into simpler parts. Syntax: `WITH cte_name AS (SELECT ... FROM table_name WHERE condition) SELECT * FROM cte_name WHERE condition;

Database Relationships Explained In 5 Types

Databases define relationships between tables as 1:1, 1:N, N:1, M:N & self-referencing. Each type uses primary keys & foreign keys for data integrity. Examples include person/passport, customer/orders, employees/departments & students/courses.

Packages In PLSQL: A Modular Approach To Code Organization

Packages in PLSQL explained: Packages group related procedures, functions & variables for modularity, reusability & better performance. Package spec declares public interface, while body contains implementation.

PL/SQL Triggers: BEFORE & AFTER With Examples

BEFORE triggers execute before DML operations (INSERT/UPDATE/DELETE), while AFTER triggers fire after the operation occurs. Examples include setting created_date before insertion & updating updated_date after salary update.

Creating A Backup Table In Oracle SQL With CTAS Statement

Create a backup table in Oracle SQL with CTAS: CREATE TABLE backup_table AS SELECT * FROM original_table; Copy just structure: CREATE TABLE employees_backup AS SELECT * FROM employees WHERE 1=0;

SQL Sequence Basics: Creating And Using Sequences In Oracle Databases

Sequences in SQL generate unique numeric values, ideal for auto-incrementing primary keys. Key features include uniqueness, automatic incrementation, customizability & independence from tables.

Sequencing In Oracle: Types, Examples, And Best Practices

Oracle sequencing explained: Sequence objects, ORDER BY, ROWNUM, ranking functions, PL/SQL sequences, analytic functions & trigger sequencing for efficient data manipulation.

Database Partitioning Strategies In SQL Explained

Learn about 5 types of SQL partitioning: Range, List, Hash, Composite & Reference. Improve database performance & manageability with the right approach.

Improving Database Performance With Oracle Partitioning Techniques

Partitioning in Oracle SQL divides large tables into smaller pieces called partitions, improving performance, manageability & availability. Types include range, list, hash & composite partitioning.

Optimizing SQL Queries With B-tree Indexes And More

SQL queries use various data structures like B-trees, Hash Tables, Heaps, Bitmaps, Tries & Graphs to optimize data retrieval, manage storage & ensure efficient querying.

Virtual DOM Vs Actual DOM: Performance And Efficiency Compared

Actual DOM vs Virtual DOM: Actual DOM is slow & directly manipulable but causes repaints & reflows. Virtual DOM is fast & efficient, updating only changed areas for seamless performance in dynamic web apps.