Foreign key fk - Samenvattingen en Aantekeningen

AREA - In DB2, a named section of permanent storage space that is reserved to store the database. associative entity - See composite entity. bridge entity - See composite entity. candidate key - A minimal superkey; that is, a key that does not contain a subset of attributes that is itself a superkey. See key. closure - A property of relational operators that permits the use of relational algebra operators on existing tables (relations) to produce new relations. composite entity - An enti...

Sales order 1NF WGU C170 Data Management - Applications Performance Assessment. EXPLANATION: I am going to call this table the "Order Table" I also need to make sure that this table contains a primary Key, in this particular table I am going to make the “OrderID” and “DonutID” the Primary Key (composite key), the reason I chose to use OrderID and DonutID as the primary key is because Order ID or DonutID by themselves do not guarantee Uniqueness but when combined uniqueness ...

AREA - In DB2, a named section of permanent storage space that is reserved to store the database. associative entity - See composite entity. bridge entity - See composite entity. candidate key - A minimal superkey; that is, a key that does not contain a subset of attributes that is itself a superkey. See key. closure - A property of relational operators that permits the use of relational algebra operators on existing tables (relations) to produce new relations. composite entity - An enti...

Highlighted fields will form a Composite primary key. City State and Zip were separated And are now atomic No duplicate data, each of the above tables has a Primary Key, and a key (foreign) that can refer to another table in the group. 3NF No transitive dependency. New table has 2 of the PKs from the other tables as Foreign Keys. Each table has a primary key which can refer to another one of the tables in this group. 1:M One Customer can place many Orders ER DIAGRAM Customer table has single pk ...

IT WGU C170 Performance Assessment Section 1 First Normal Form I gathered all the data from the sales invoice and created an unnormalized dataset. I determined the primary key that provided me with a unique value for all my records in this table. I used composite primary keys because both keys would be able to uniquely identify all the data in the table. Finally, I removed all the repeating groups and made the address atomic by creating separate fields for each one. There is a...

What is data? - Answer- Information gathered from observations, surveys and so on What is big data? - Answer- Any data that cannot reside in a hard disk or in a single system Data VS Information - Answer- Information is interpreted Data, has context and meaning What is the space between data and information called? - Answer- Analysis Gap Data Sizes - Answer- Small: Data that can reside in RAM or memory Medium: Data that can reside on a Hard Drive Big: Any data that cannot resided ...

3 Vs - Correct Answer-Three basic characteristics of Big Data databases: volume, velocity, and variety. abstract data type (ADT) - Correct Answer-Data type that describes a set of similar objects with shared and encapsulated data representation and methods. A(n) is generally used to describe complex objects. See also class. ad hoc query - Correct Answer-A "spur-of-the-moment" question. alias - Correct Answer-An alternative name for a column or table in a SQL statement. ALTER TABLE ...

3 Vs - Correct Answer-Three basic characteristics of Big Data databases: volume, velocity, and variety. abstract data type (ADT) - Correct Answer-Data type that describes a set of similar objects with shared and encapsulated data representation and methods. A(n) is generally used to describe complex objects. See also class. ad hoc query - Correct Answer-A "spur-of-the-moment" question. alias - Correct Answer-An alternative name for a column or table in a SQL statement. ALTER TABLE ...

1NF 2NF Highlighted fields will form a Composite primary key. City State and Zip were separated And are now atomic No duplicate data, each of the above tables has a Primary Key, and a key (foreign) that can refer to another table in the group. 3NF No transitive dependency. New table has 2 of the PKs from the other tables as Foreign Keys. Each table has a primary key which can refer to another one of the tables in this group. 1:M One Customer can place many Orders ER DIAGRAM Custom...

Highlighted fields will form a Composite primary key. City State and Zip were separated And are now atomic No duplicate data, each of the above tables has a Primary Key, and a key (foreign) that can refer to another table in the group. 3NF No transitive dependency. New table has 2 of the PKs from the other tables as Foreign Keys. Each table has a primary key which can refer to another one of the tables in this group. 1:M One Customer can place many Orders ER DIAGRAM Customer table ...