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Recent Posts
- SQL.What are domain types (or constraints on data types), and how do they help enforce data correctness?
- SQL.How does SQL handle comparisons between different data types (for example, string vs number), and why is this dangerous?
- SQL.What is the difference between DATE, TIME, TIMESTAMP, and TIMESTAMPTZ, and which one should be used for business events?
- SQL.How do numeric types like INTEGER, BIGINT, DECIMAL, and FLOAT differ in terms of precision and use cases?
- SQL.What problems can arise from implicit type casting in SQL, and how can it affect indexes?
- SQL.How does NULL differ from 0, an empty string, or FALSE in SQL?
- SQL.What is the difference between CHAR, VARCHAR, and TEXT, and when would you choose each?
- SQL.What is MVCC ?
- SQL.What is AutoVacuum Postgres ?
- SQL.What is eventual consistency ?
- SQL.What is CDC (Change Data Capture)? ?
- SQL.If i should write a little operations of income and outome of client from kafka and then show them big reports, what should i do ? Shouldnt it be the one db to not to write to both OLTP and OLAP databases ?
- SQL.What is OLTP, OLAP ?
- SQL.What is full scan / index scan ?
- SQL.How DBMS chooses the plan ?
- SQL.JoinExamples
- SQL.What are join algos ?
- SQL.What is the problem in using null in in operator ?
- SQL.How does the relational model differ from object-oriented models, and why does this matter for backend development?
- SQL.What guarantees does the relational model provide, and what does SQL not guarantee?
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