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nvogel

Rating
1509.94 (71,051st) 		Reputation
21,224 (6,313th)
Page: 1 ... 4 5 6 7 8 ... 17
Title Δ
Changes (subtle or not) in a database schema that break applications 0.00
Understanding the fact tables in data warehousing +0.01
Entity Arrangement in ERD 0.00
why do we need weak entity instead of making it strong entity? 0.00
Ruby - Swapping primary keys of two ActiveRecord instances? Elegantly -0.01
issue with trigger function in sql +2.37
Combine INSERTED and DELETED in a trigger without using a JOIN +0.49
Converting an logical model to a physical model. Trouble understand... 0.00
can a multi column fk reference multiple tables? +0.50
Recommend Software for Drawing a Normalization Diagram +0.51
Deciding whether a relation is 3NF or 2NF +2.13
May a 6NF Table contain a foreign key? 0.00
BCNF with One Surrogate Key and Two Unique Keys +1.14
Update unique or primary keys in MySQL -1.90
What does the size of a SQL table depend on? -0.49
DB Design: What are benefit(s) of creating a table to hold all IDs... -0.42
ER Diagrams - Can a relationship have a multi-valued attribute? 0.00
CHECKSUM and CHECKSUM_AGG: What's the algorithm? 0.00
Difference between composite entity and attributed relationship 0.00
Database Normalization and Structure 0.00
SELECT DISTINCT HAVING Count unique conditions +0.42
Date Conversion Oracle to SQL Server -1.87
functional dependencies involving the empty set +0.48
Normalizing to 1NF without composite keys -0.37
Identifying relationships losing meaning in relating entity 0.00
PK on table with (simulated) polymorphic association 0.00
Decomposition rule relational databases 0.00
Normalization Dependencies +2.79
SQL Server 2012 Time Range Check? -0.30
why superkey is required when we can identify a tuple uniquely thro... +0.67
AND field NOT IN(NULL) returns an empty set +1.30
Functional dependencies is DBMS - key -1.90
What is a good strategy, other than NULLs, for dealing with unknown... +1.99
Is Ms Access DBMS Or RDBMS? 0.00
How to rollback delete command without using transaction +0.04
What is the database schema of a one-to-one relationship involving... +0.47
Is null bad within a relational database 0.00
Why is the foreign key part of the primary key in an identifying re... -1.82
Difference between primary key search and fields search SQL +0.21
What is the difference between a candidate key and a primary key? -0.12
When can an SQL result contain duplicates? +0.82
How to store postal addresses and political divisions in a normaliz... -0.48
Save 2-dimensional spreadsheet data to database +0.51
RDBMS keys confusion +0.95
When is it ok to NOT normalize? +1.40
Display highest earning emp's name and salary without using any kin... -1.18
Creating a Foreign Key after normalization -0.22
Do the "columns" in a table in a RMDB have order? -1.32
Can I define an identifying relationship with an artificial PK 0.00
Should I put optional record properties in a separate table? +0.85