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philipxy

Rating
1512.61 (54,505th) 		Reputation
11,699 (12,666th)
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Title Δ
There in an ambiguity in this ERD scenario +0.51
Query data from table with ID to get info detail +0.02
Why aren't all the normal forms used? 0.00
Double functional dependency -1.85
Unjust Underuse of O-O and NoSQL Databases vs Relational? -0.49
Relationalship design in PostgreSQL -0.01
What is the best practice for changing status of a record in database +0.02
Trying to understand cardinality in an entity relationship diagram? +0.01
convert sql query into relational algebra 0.00
Algorithm for reordering a table of items 0.00
Understanding Primary Key and Relationship Databases with MySQL (ph... +0.51
What exactly is the difference between a functional relational sche... 0.00
Is it ok to have a primary key relate to another primary key? +0.13
SQL plan compilation and truth tables +2.61
Find date range overlaps within the same table, for specific user M... -1.88
Normalisation of Relational Databases -2.05
MySql memory engine do not check on update foreign key? 0.00
How do I rewind a for loop? +1.46
How do I assign foreign keys to a MySQL table from a csv file? +0.44
What's the best practice for a table that refers n tables with... -0.23
Why is it harder to query for entities with more than every vs less... -1.43
JPA Query returning nulls - Composite Key with null column 0.00
Do relationships between tables need to have descriptions? 0.00
Zero_or_One vs One_or_only_One entity relation just for initially a... 0.00
Is there any rule of thumb to construct SQL query from a human-read... +0.63
Cartesian products of tables that contains same columns +0.01
stuck at this command loop, trying to get right answer for this que... -2.05
Dynamic Table INNER JOINS 0.00
FK References 2 Subclass Error when adding data +0.13
Convert sql to tuple relational calculus 0.00
Relational algebra statement to eliminate duplicates 0.00
Is it possible to get rid of the so-called 'Spurious Tuples'... -2.02
Can all Relational Alegbra queries be done in SQL? 0.00
C++ - A few quetions about my textbook's ASCII table -1.44
How to map this ER model to actual tables? -0.02
Structuring a "sparse" data table + ORM ( + NoSQL?) 0.00
Internal working of RDBMS 0.00
When to hardcode data inside the source code, when to use the datab... +0.68
Is there a way to represent relationship between a tuple and to a t... 0.00
What attributes could I use to get this Database into 3NF? 0.00
SQL Server "pseudo/synthetic" composite Id(key) 0.00
Please clear this confusion regarding relational algebra/tuple rela... 0.00
Why don't CMS databases use Foreign Keys? 0.00
a relation between a table and distinct table +0.00
Can a CK have a FK referencing to a CK in another table? 0.00
In 2NF, can a partial dependency have a composite primary key? -2.06
Are tables with the same attributes but different relationships bad... 0.00
Alternatives to junction table? +1.77
Is it possible to implement a TRUE one-to-one relation? -0.13
Is there a database design pattern name for reducing duplicate join... +1.59