How many types of data validation methods are written on table level?

What is the difference between Index and Index hint?

Adding the "index" statement to an Axapta select, it does NOT mean that this index will be used by the database. What it DOES mean is that Axapta will send an "order by" to the database. Adding the "index hint" statement to an Axapta select, it DOES mean that this index will be used by the database (and no other one).

How many types of relations are available in Axapta, Explain each of them.

Normal Relation: enforce referential integrity such as foreign keys. For displaying lookup on the child table.

Field fixed: works as a trigger to verify that a relation is active, if an enum field in the table has a specific value then the relation is active. It works on conditional relations and works on enum type of data.

Ex-Dimension table

Related field fixed: works as a filter on the related table.it only shows records that match the specified value for an enum field on the related table.

How many types of Delete Actions are there in Standard Ax and define the use of each MorphX

None

Cascade

Restricted

Cascade+Restricted..

How many kind of lookups can be made and how.

By using table relations Using EDT relations.

Using morphx and using X++ code(Syslookup class).

When the recid is generated, what is its utility?

when the record is entered in the table the recid is generated by the kernel.it is unique for each table.

Difference between Primary & Cluster index.

Primary index: It works on unique indexes. The data should be unique and not null. Retrieve data from the database.

Clustered Index: It works on unique and non unique indexes. retrieve data from the AOS.

The advantages of having a cluster index are as follows:

• Search results are quicker when records are retrieved by the cluster index,
• especially if records are retrieved sequentially along the index.
• Other indexes that use fields that are a part of the cluster index might use less data space.
• Fewer files in the database; data is clustered in the same file as the clustering index. This reduces the space used on the disk and in the cache.
• The disadvantages of having a cluster index are as follows: Olt takes longer to update records (but only when the fields in the clustering index are changed).
• More data space might be used for other indexes that use fields that are not part of the cluster index if the clustering index is wider than approximately 20 characters).

What is the function of super()

This method calls the system methods to execute. It is used to instantiating the variables at the parent class. Used for code redundancy.

How many kind of lookups can be made and how.

By using table relations Using EDT relations.

Using morphx and using X++ code(Syslookup class).

How many types of Delete Actions are there in Standard Ax and define the use of each

None

Cascade

Restricted

Cascade+Restricted.

What are the different types of Table groups defined on table properties?

• Miscellaneous
• Parameter
• Group
• Main
• Transaction
• WorkSheetHeader
• WorkSheetLine

Multiple inheritance possible or not, if not how can we overcome that.

In X++, a new class can only extend one other class; multiple inheritance is not supported. If you extend a class, it inherits all the methods and variables in the parent class (the superclass).

We can use Interfaces instead of multiple inheritance in Ax